Company lists · Data refreshed September 2026
Top 25 IT systems integrators based in the United Kingdom
RevenueBase identified 993 company matches for IT systems integrators associated with the United Kingdom as of September 2026 and tracks 22,726 professional contacts across them, including 8,036 with verified work emails. London is the largest hub.
This list covers company matches for IT systems integrators associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest IT systems integrators based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 764 contacts → | ||||
Exact match “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 540 contacts → | ||||
Exact match “Dimension Data uses the power of technology to help organisations achieve great things.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 538 contacts → | ||||
Exact match “Unlock your potential with XMA.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 502 contacts → | ||||
Exact match “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 421 contacts → | ||||
Exact match “Trustmarque delivers the value of technology to bring real-life impact.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 401 contacts → | ||||
Exact match “We believe successful businesses are underpinned by quality IT infrastructure.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 386 contacts → | ||||
Exact match “Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 351 contacts → | ||||
Exact match “What we do | With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 326 contacts → | ||||
Exact match “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 326 contacts → | ||||
Exact match “As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 307 contacts → | ||||
Exact match “Arch has specialised in SAP solutions for over 25 years and our team has extensive experience of SAP technologies and SAP usability.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 295 contacts → | ||||
Exact match “At Kocho, we believe greatness lies in everyone.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 292 contacts → | ||||
Exact match “OLR is a specialist Oracle Retail systems integrator delivering end-to-end omnichannel solutions to enable leading retailers to accelerate business success through system…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 234 contacts → | ||||
Exact match “For organisations facing the compounding threats of ageing assets, a retiring workforce, and evolving cyber attacks, the status quo is no longer an option.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 215 contacts → | ||||
Exact match “We are an IT business with a difference.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 200 contacts → | ||||
Exact match “Founded in 1996 we have grown into one of the UK and Ireland’s leading qualified and accredited security and fire systems integrators, working across Europe to bring together…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 193 contacts → | ||||
Exact match “eAppSys is a systems integrator that is focused exclusively on supporting the core enterprise application systems within Oracle On-Premise and Cloud Applications.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 190 contacts → | ||||
Exact match “Platned helps organisations simplify complex change and get more value from their enterprise technology investments.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 186 contacts → | ||||
Exact match “Maintel is a leading systems integrator and managed services provider, delivering effortless communications solutions to a broad spectrum of businesses in the UK and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 164 contacts → | ||||
Exact match “With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 162 contacts → | ||||
Exact match “For over 35 years now WTL has been providing seamlessly integrated IT solutions and managed services to medium and large enterprises within the UK, including major clients within…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 128 contacts → | ||||
Exact match “SISL Infotech is a market-leading IT infrastructure reseller and systems integrator with operations in EMEA / NAM / LATAM / APAC - data centre & cloud solutions - network…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 125 contacts → | ||||
Exact match “KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 119 contacts → | ||||
Exact match “Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 117 contacts → | ||||
Exact match “European Electronique is a leading UK systems Integrator, specialising in the delivery of secure technology platforms including Hybrid IT, Cyber Security and Networking…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “IT systems integrators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 993 IT systems integrators based in the United Kingdom
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IT systems integrators based in the United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 993 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “IT systems integrators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 8,036 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
IT systems integrators by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT systems integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many IT systems integrators are there based in the United Kingdom?
RevenueBase identified 993 company matches for IT systems integrators associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
MTI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most IT systems integrators?
London leads with 260 company records, followed by Manchester (23) and Birmingham (16).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,036 professional contacts with verified work emails tracked across these 993 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 993 IT systems integrators based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
IT systems integrators by geography
- IT systems integrators based in Buenos Aires, Argentina
- IT systems integrators based in Brisbane, Australia
- IT systems integrators based in Melbourne, Australia
- IT systems integrators based in Perth, Australia
- IT systems integrators based in Sydney, Australia
- IT systems integrators based in Baku, Azerbaijan
- IT systems integrators based in Dhaka, Bangladesh
- IT systems integrators based in Barueri, Brazil
- IT systems integrators based in Belo Horizonte, Brazil
- IT systems integrators based in Campinas, Brazil
- IT systems integrators based in Curitiba, Brazil
- IT systems integrators based in Porto Alegre, Brazil
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT systems integrators based in Buenos Aires, Argentina
- IT systems integrators based in Brisbane, Australia
- IT systems integrators based in Melbourne, Australia
- IT systems integrators based in Perth, Australia
- IT systems integrators based in Sydney, Australia
- IT systems integrators based in Baku, Azerbaijan
Company intelligence · public preview
Top 25 IT systems integrators based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 993 matching company records for IT systems integrators based in the United Kingdom, with 22,726 tracked contacts and 8,036 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT systems integrators based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  MTImti.comHQ: Staines-upon-thames, United KingdomReported employees: 201-500 | Staines-upon-thames, United Kingdom | 201-500 | Exact match | 764 contacts → |
“MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Dimension Data UKIdimensiondata.comHQ: Fleet, United KingdomReported employees: 1,001-5,000 | Fleet, United Kingdom | 1,001-5,000 | Exact match | 540 contacts → |
“Dimension Data uses the power of technology to help organisations achieve great things.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  XMAxma.co.ukHQ: Reading, United KingdomReported employees: 501-1,000 | Reading, United Kingdom | 501-1,000 | Exact match | 538 contacts → |
“Unlock your potential with XMA.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Securityhqsecurityhq.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 502 contacts → |
“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Trustmarquetrustmarque.comHQ: York, United KingdomReported employees: 501-1,000 | York, United Kingdom | 501-1,000 | Exact match | 421 contacts → |
“Trustmarque delivers the value of technology to bring real-life impact.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Zenzerozenzero.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 401 contacts → |
“We believe successful businesses are underpinned by quality IT infrastructure.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Trinity Fire & Security Systemstrinityfireandsecurity.comHQ: Exeter, United KingdomReported employees: 501-1,000 | Exeter, United Kingdom | 501-1,000 | Exact match | 386 contacts → |
“Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Capulacapula.comHQ: Stone, United KingdomReported employees: 201-500 | Stone, United Kingdom | 201-500 | Exact match | 351 contacts → |
“What we do | With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Kings Secure Technologieskingsltd.co.ukHQ: Bradford, United KingdomReported employees: 501-1,000 | Bradford, United Kingdom | 501-1,000 | Exact match | 326 contacts → |
“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Reliance Infosystemsreliance.systemsHQ: West End, United KingdomReported employees: 201-500 | West End, United Kingdom | 201-500 | Exact match | 326 contacts → |
“As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  ARCHarch-global.comHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 307 contacts → |
“Arch has specialised in SAP solutions for over 25 years and our team has extensive experience of SAP technologies and SAP usability.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  KOCHOkocho.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“At Kocho, we believe greatness lies in everyone.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  OLRolrretail.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 292 contacts → |
“OLR is a specialist Oracle Retail systems integrator delivering end-to-end omnichannel solutions to enable leading retailers to accelerate business success through system…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  ITI Groupitigroup.comHQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 234 contacts → |
“For organisations facing the compounding threats of ageing assets, a retiring workforce, and evolving cyber attacks, the status quo is no longer an option.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Waterstonswaterstons.comHQ: Durham, United KingdomReported employees: 201-500 | Durham, United Kingdom | 201-500 | Exact match | 215 contacts → |
“We are an IT business with a difference.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Evolution Electronic Security Systems LTDevolutionsecurity.comHQ: Marlow, United KingdomReported employees: 201-500 | Marlow, United Kingdom | 201-500 | Exact match | 200 contacts → |
“Founded in 1996 we have grown into one of the UK and Ireland’s leading qualified and accredited security and fire systems integrators, working across Europe to bring together…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Eappsyseappsys.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 193 contacts → |
“eAppSys is a systems integrator that is focused exclusively on supporting the core enterprise application systems within Oracle On-Premise and Cloud Applications.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Platnedplatned.comHQ: Gerrards Cross, United KingdomReported employees: 201-500 | Gerrards Cross, United Kingdom | 201-500 | Exact match | 190 contacts → |
“Platned helps organisations simplify complex change and get more value from their enterprise technology investments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Maintel Azzurri Communicationsmaintel.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 186 contacts → |
“Maintel is a leading systems integrator and managed services provider, delivering effortless communications solutions to a broad spectrum of businesses in the UK and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  DOWDSdowdsgroup.comHQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 164 contacts → |
“With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  WTL LTDwtluk.comHQ: Birmingham, United KingdomReported employees: Not recorded | Birmingham, United Kingdom | Not recorded | Exact match | 162 contacts → |
“For over 35 years now WTL has been providing seamlessly integrated IT solutions and managed services to medium and large enterprises within the UK, including major clients within…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sisl Globalsisl.globalHQ: Uxbridge, United KingdomReported employees: 1,001-5,000 | Uxbridge, United Kingdom | 1,001-5,000 | Exact match | 128 contacts → |
“SISL Infotech is a market-leading IT infrastructure reseller and systems integrator with operations in EMEA / NAM / LATAM / APAC - data centre & cloud solutions - network…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Khipu Networkskhipu-networks.comHQ: Fleet, United KingdomReported employees: 51-200 | Fleet, United Kingdom | 51-200 | Exact match | 125 contacts → |
“KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  CINOScinos.netHQ: Frimley, United KingdomReported employees: 51-200 | Frimley, United Kingdom | 51-200 | Exact match | 119 contacts → |
“Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  European Electroniqueeuroele.comHQ: Eynsham, United KingdomReported employees: 51-200 | Eynsham, United Kingdom | 51-200 | Exact match | 117 contacts → |
“European Electronique is a leading UK systems Integrator, specialising in the delivery of secure technology platforms including Hybrid IT, Cyber Security and Networking…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 993 company matches
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IT systems integrators: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
990 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 993 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
IT systems integrators by metro
Questions about this company list
What does Exact match mean for IT systems integrators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT systems integrators did RevenueBase find based in the United Kingdom?
The saved snapshot records 993 matching company records, 22,726 tracked contacts and 8,036 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
IT systems integrators by geography
- IT systems integrators based in Buenos Aires, Argentina
- IT systems integrators based in Brisbane, Australia
- IT systems integrators based in Melbourne, Australia
- IT systems integrators based in Perth, Australia
- IT systems integrators based in Sydney, Australia
- IT systems integrators based in Baku, Azerbaijan
- IT systems integrators based in Dhaka, Bangladesh
- IT systems integrators based in Barueri, Brazil
- IT systems integrators based in Belo Horizonte, Brazil
- IT systems integrators based in Campinas, Brazil
- IT systems integrators based in Curitiba, Brazil
- IT systems integrators based in Porto Alegre, Brazil
Cite this list
RevenueBase Data Team. Top 25 IT systems integrators based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/it-systems-integrators/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT systems integrators based in Buenos Aires, Argentina
- IT systems integrators based in Brisbane, Australia
- IT systems integrators based in Melbourne, Australia
- IT systems integrators based in Perth, Australia
- IT systems integrators based in Sydney, Australia
- IT systems integrators based in Baku, Azerbaijan
Company intelligence · public preview
Top 25 IT systems integrators based in the United Kingdom
RevenueBase records 993 matching company records for IT systems integrators based in the United Kingdom, with 22,726 tracked contacts and 8,036 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT systems integrators based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | MTImti.com HQ: Staines-upon-thames, United KingdomReported employees: 201-500 | Staines-upon-thames, United Kingdom | 201-500 | Exact match | 764 contacts → |
“MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Dimension Data UKIdimensiondata.com HQ: Fleet, United KingdomReported employees: 1,001-5,000 | Fleet, United Kingdom | 1,001-5,000 | Exact match | 540 contacts → |
“Dimension Data uses the power of technology to help organisations achieve great things.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | XMAxma.co.uk HQ: Reading, United KingdomReported employees: 501-1,000 | Reading, United Kingdom | 501-1,000 | Exact match | 538 contacts → |
“Unlock your potential with XMA.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Securityhqsecurityhq.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 502 contacts → |
“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Trustmarquetrustmarque.com HQ: York, United KingdomReported employees: 501-1,000 | York, United Kingdom | 501-1,000 | Exact match | 421 contacts → |
“Trustmarque delivers the value of technology to bring real-life impact.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Zenzerozenzero.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 401 contacts → |
“We believe successful businesses are underpinned by quality IT infrastructure.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Trinity Fire & Security Systemstrinityfireandsecurity.com HQ: Exeter, United KingdomReported employees: 501-1,000 | Exeter, United Kingdom | 501-1,000 | Exact match | 386 contacts → |
“Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Capulacapula.com HQ: Stone, United KingdomReported employees: 201-500 | Stone, United Kingdom | 201-500 | Exact match | 351 contacts → |
“What we do | With a focus on operational technology and digital transformation, Capula has been a leader in advanced system integration for decades; optimising efficiency &…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kings Secure Technologieskingsltd.co.uk HQ: Bradford, United KingdomReported employees: 501-1,000 | Bradford, United Kingdom | 501-1,000 | Exact match | 326 contacts → |
“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Reliance Infosystemsreliance.systems HQ: West End, United KingdomReported employees: 201-500 | West End, United Kingdom | 201-500 | Exact match | 326 contacts → |
“As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ARCHarch-global.com HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 307 contacts → |
“Arch has specialised in SAP solutions for over 25 years and our team has extensive experience of SAP technologies and SAP usability.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | KOCHOkocho.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“At Kocho, we believe greatness lies in everyone.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | OLRolrretail.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 292 contacts → |
“OLR is a specialist Oracle Retail systems integrator delivering end-to-end omnichannel solutions to enable leading retailers to accelerate business success through system…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ITI Groupitigroup.com HQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 234 contacts → |
“For organisations facing the compounding threats of ageing assets, a retiring workforce, and evolving cyber attacks, the status quo is no longer an option.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Waterstonswaterstons.com HQ: Durham, United KingdomReported employees: 201-500 | Durham, United Kingdom | 201-500 | Exact match | 215 contacts → |
“We are an IT business with a difference.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Evolution Electronic Security Systems LTDevolutionsecurity.com HQ: Marlow, United KingdomReported employees: 201-500 | Marlow, United Kingdom | 201-500 | Exact match | 200 contacts → |
“Founded in 1996 we have grown into one of the UK and Ireland’s leading qualified and accredited security and fire systems integrators, working across Europe to bring together…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Eappsyseappsys.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 193 contacts → |
“eAppSys is a systems integrator that is focused exclusively on supporting the core enterprise application systems within Oracle On-Premise and Cloud Applications.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Platnedplatned.com HQ: Gerrards Cross, United KingdomReported employees: 201-500 | Gerrards Cross, United Kingdom | 201-500 | Exact match | 190 contacts → |
“Platned helps organisations simplify complex change and get more value from their enterprise technology investments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Maintel Azzurri Communicationsmaintel.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 186 contacts → |
“Maintel is a leading systems integrator and managed services provider, delivering effortless communications solutions to a broad spectrum of businesses in the UK and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | DOWDSdowdsgroup.com HQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 164 contacts → |
“With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | WTL LTDwtluk.com HQ: Birmingham, United KingdomReported employees: Not recorded | Birmingham, United Kingdom | Not recorded | Exact match | 162 contacts → |
“For over 35 years now WTL has been providing seamlessly integrated IT solutions and managed services to medium and large enterprises within the UK, including major clients within…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sisl Globalsisl.global HQ: Uxbridge, United KingdomReported employees: 1,001-5,000 | Uxbridge, United Kingdom | 1,001-5,000 | Exact match | 128 contacts → |
“SISL Infotech is a market-leading IT infrastructure reseller and systems integrator with operations in EMEA / NAM / LATAM / APAC - data centre & cloud solutions - network…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Khipu Networkskhipu-networks.com HQ: Fleet, United KingdomReported employees: 51-200 | Fleet, United Kingdom | 51-200 | Exact match | 125 contacts → |
“KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | CINOScinos.net HQ: Frimley, United KingdomReported employees: 51-200 | Frimley, United Kingdom | 51-200 | Exact match | 119 contacts → |
“Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | European Electroniqueeuroele.com HQ: Eynsham, United KingdomReported employees: 51-200 | Eynsham, United Kingdom | 51-200 | Exact match | 117 contacts → |
“European Electronique is a leading UK systems Integrator, specialising in the delivery of secure technology platforms including Hybrid IT, Cyber Security and Networking…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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IT systems integrators: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
990 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 993 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
IT systems integrators by metro
Questions about this company list
What does Exact match mean for IT systems integrators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT systems integrators did RevenueBase find based in the United Kingdom?
The saved snapshot records 993 matching company records, 22,726 tracked contacts and 8,036 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
IT systems integrators by geography
- IT systems integrators based in Buenos Aires, Argentina
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- IT systems integrators based in Melbourne, Australia
- IT systems integrators based in Perth, Australia
- IT systems integrators based in Sydney, Australia
- IT systems integrators based in Baku, Azerbaijan
- IT systems integrators based in Dhaka, Bangladesh
- IT systems integrators based in Barueri, Brazil
- IT systems integrators based in Belo Horizonte, Brazil
- IT systems integrators based in Campinas, Brazil
- IT systems integrators based in Curitiba, Brazil
- IT systems integrators based in Porto Alegre, Brazil
Cite this list
RevenueBase Data Team. Top 25 IT systems integrators based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/it-systems-integrators/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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