Company lists · Data refreshed November 2026
Top 23 IT system integrators based in the United Kingdom
RevenueBase identified 745 company matches for IT system integrators associated with the United Kingdom as of November 2026 and tracks 19,759 professional contacts across them, including 8,896 with verified work emails. London is the largest hub.
This list covers company matches for IT system 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 November 6, 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 23 largest IT system integrators based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 389 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 374 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 310 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 262 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 203 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 177 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 128 contacts → | ||||
Exact match “OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 120 contacts → | ||||
Exact match “Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 115 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 102 contacts → | ||||
Exact match “Better protect your people, places and spaces.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 96 contacts → | ||||
Exact match “Key2 is a company specialized in IT Consultancy, Software Development, Systems Integration, learning services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 95 contacts → | ||||
Exact match “As a System Integrator for over 37 years, Adsyst (Automation) Ltd has been providing complex Control Systems for Process Control, Automation and Telemetry to customers worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 91 contacts → | ||||
Exact match “Connecting people, places, and possibilities through transformative workplace technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 83 contacts → | ||||
Exact match “Nephos Technologies is an independent data systems integrator, specialising in helping organisations transform the way they store, manage and protect their data.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 80 contacts → | ||||
Exact match “Bluesmith specialises in bespoke systems for Blue Chip and government clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 76 contacts → | ||||
Exact match “ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 76 contacts → | ||||
Exact match “CST is an I.T.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 75 contacts → | ||||
Exact match “Renowned across numerous sectors as 'the systems integrator of choice', we have built a reputation on delivering high quality, value-for-money solutions that enhance production…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 73 contacts → | ||||
Exact match “Arlanis Reply is the Reply Group company specializing in Salesforce implementations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 68 contacts → | ||||
Exact match “Infoteck Solutions: Empowering Integration and Automation Welcome to Infoteck Solutions, your trusted partner in seamless integration and efficient automation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 66 contacts → | ||||
Exact match “At Eureka Solutions, we specialise in implementing powerful cloud-based systems that have the potential to revolutionise your business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 64 contacts → | ||||
Exact match “Technology That Matters.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 63 contacts → | ||||
Exact match “Empowering through digital transformation.” Recorded in the RevenueBase company graph · Nov 6, 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 system 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 23 of 745 IT system integrators based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 8,896 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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IT system integrators based in the United Kingdom at a glance
As of Nov 6, 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 745 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 system 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 8,896 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 November 6, 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 system 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 system integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many IT system integrators are there based in the United Kingdom?
RevenueBase identified 745 company matches for IT system integrators associated with the United Kingdom as of November 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?
Trinity Fire & Security Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most IT system integrators?
London leads with 151 company records, followed by Manchester (22) and Bristol (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 8,896 professional contacts with verified work emails tracked across these 745 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 745 IT system integrators based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
IT system integrators by geography
- IT system integrators based in Buenos Aires, Argentina
- IT system integrators based in Melbourne, Australia
- IT system integrators based in Sydney, Australia
- IT system integrators based in Baku, Azerbaijan
- IT system integrators based in Dhaka, Bangladesh
- IT system integrators based in Belo Horizonte, Brazil
- IT system integrators based in Curitiba, Brazil
- IT system integrators based in Rio De Janeiro, Brazil
- IT system integrators based in Sao Paulo, Brazil
- IT system integrators based in Sofia, Bulgaria
- IT system integrators based in Calgary, Canada
- IT system integrators based in Mississauga, Canada
Browse the directory
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.
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- IT system integrators based in Buenos Aires, Argentina
- IT system integrators based in Melbourne, Australia
- IT system integrators based in Sydney, Australia
- IT system integrators based in Baku, Azerbaijan
- IT system integrators based in Dhaka, Bangladesh
- IT system integrators based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 23 IT system 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 745 matching company records for IT system integrators based in the United Kingdom, with 19,759 tracked contacts and 8,896 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 23 IT system 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 |  Trinity Fire & Security Systemstrinityfireandsecurity.comHQ: Exeter, United KingdomReported employees: 501-1,000 | Exeter, United Kingdom | 501-1,000 | Exact match | 389 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Capulacapula.comHQ: Stone, United KingdomReported employees: 201-500 | Stone, United Kingdom | 201-500 | Exact match | 374 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  ARCHarch-global.comHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 310 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ITI Groupitigroup.comHQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 262 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Maintel Azzurri Communicationsmaintel.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 203 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  DOWDSdowdsgroup.comHQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 177 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Opticoreitopticoreit.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 128 contacts → |
“OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  CINOScinos.netHQ: Frimley, United KingdomReported employees: 51-200 | Frimley, United Kingdom | 51-200 | Exact match | 120 contacts → |
“Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  European Electroniqueeuroele.comHQ: Eynsham, United KingdomReported employees: 51-200 | Eynsham, United Kingdom | 51-200 | Exact match | 115 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Total Integrated Solutions TIS LTDtis.co.ukHQ: Mansfield, United KingdomReported employees: 51-200 | Mansfield, United Kingdom | 51-200 | Exact match | 102 contacts → |
“Better protect your people, places and spaces.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Key2key2.itHQ: Rome, United KingdomReported employees: 51-200 | Rome, United Kingdom | 51-200 | Exact match | 96 contacts → |
“Key2 is a company specialized in IT Consultancy, Software Development, Systems Integration, learning services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Adsyst Automation Limitedadsyst.co.ukHQ: Yateley, United KingdomReported employees: 51-200 | Yateley, United Kingdom | 51-200 | Exact match | 95 contacts → |
“As a System Integrator for over 37 years, Adsyst (Automation) Ltd has been providing complex Control Systems for Process Control, Automation and Telemetry to customers worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Twistedpair LTDtwistedpair.co.ukHQ: Portsmouth, United KingdomReported employees: 51-200 | Portsmouth, United Kingdom | 51-200 | Exact match | 91 contacts → |
“Connecting people, places, and possibilities through transformative workplace technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Nephos Technologiesnephostechnologies.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Nephos Technologies is an independent data systems integrator, specialising in helping organisations transform the way they store, manage and protect their data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Bluesmith Information Systemsbluesmithis.comHQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Bluesmith specialises in bespoke systems for Blue Chip and government clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  ADM Computingadm-computing.co.ukHQ: Canterbury, United KingdomReported employees: 51-200 | Canterbury, United Kingdom | 51-200 | Exact match | 76 contacts → |
“ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  CSTcst.co.ukHQ: Wooburn Green, United KingdomReported employees: 51-200 | Wooburn Green, United Kingdom | 51-200 | Exact match | 76 contacts → |
“CST is an I.T.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Denca Controls LTDdenca.comHQ: Widnes, United KingdomReported employees: 51-200 | Widnes, United Kingdom | 51-200 | Exact match | 75 contacts → |
“Renowned across numerous sectors as 'the systems integrator of choice', we have built a reputation on delivering high quality, value-for-money solutions that enhance production…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Arlanis Reply UKreply.comHQ: Westminster, United KingdomReported employees: 11-50 | Westminster, United Kingdom | 11-50 | Exact match | 73 contacts → |
“Arlanis Reply is the Reply Group company specializing in Salesforce implementations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Infoteck Solutionsinfoteck.solutionsHQ: Holborn, United KingdomReported employees: 51-200 | Holborn, United Kingdom | 51-200 | Exact match | 68 contacts → |
“Infoteck Solutions: Empowering Integration and Automation Welcome to Infoteck Solutions, your trusted partner in seamless integration and efficient automation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Eureka Solutions Scotland LTDeurekasolutions.co.ukHQ: East Kilbride, United KingdomReported employees: 51-200 | East Kilbride, United Kingdom | 51-200 | Exact match | 66 contacts → |
“At Eureka Solutions, we specialise in implementing powerful cloud-based systems that have the potential to revolutionise your business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Idns LTDidns.co.ukHQ: Bolton, United KingdomReported employees: 51-200 | Bolton, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Technology That Matters.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Forfusion LTDforfusion.comHQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 63 contacts → |
“Empowering through digital transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 745 company matches
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IT system integrators: dataset insights
November 6, 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
726 records in the displayed employee bands.
19 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 745 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: November 6, 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 system integrators by metro
Questions about this company list
What does Exact match mean for IT system 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 system integrators did RevenueBase find based in the United Kingdom?
The saved snapshot records 745 matching company records, 19,759 tracked contacts and 8,896 verified emails. The public preview displays 23 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: November 6, 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 system integrators by geography
- IT system integrators based in Buenos Aires, Argentina
- IT system integrators based in Melbourne, Australia
- IT system integrators based in Sydney, Australia
- IT system integrators based in Baku, Azerbaijan
- IT system integrators based in Dhaka, Bangladesh
- IT system integrators based in Belo Horizonte, Brazil
- IT system integrators based in Curitiba, Brazil
- IT system integrators based in Rio De Janeiro, Brazil
- IT system integrators based in Sao Paulo, Brazil
- IT system integrators based in Sofia, Bulgaria
- IT system integrators based in Calgary, Canada
- IT system integrators based in Mississauga, Canada
Browse the directory
Cite this list
RevenueBase Data Team. Top 23 IT system integrators based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/it-system-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 system integrators based in Buenos Aires, Argentina
- IT system integrators based in Melbourne, Australia
- IT system integrators based in Sydney, Australia
- IT system integrators based in Baku, Azerbaijan
- IT system integrators based in Dhaka, Bangladesh
- IT system integrators based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 23 IT system integrators based in the United Kingdom
RevenueBase records 745 matching company records for IT system integrators based in the United Kingdom, with 19,759 tracked contacts and 8,896 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 23 IT system 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 | Trinity Fire & Security Systemstrinityfireandsecurity.com HQ: Exeter, United KingdomReported employees: 501-1,000 | Exeter, United Kingdom | 501-1,000 | Exact match | 389 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Capulacapula.com HQ: Stone, United KingdomReported employees: 201-500 | Stone, United Kingdom | 201-500 | Exact match | 374 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | ARCHarch-global.com HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 310 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ITI Groupitigroup.com HQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 262 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Maintel Azzurri Communicationsmaintel.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 203 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | DOWDSdowdsgroup.com HQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 177 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Opticoreitopticoreit.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 128 contacts → |
“OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | CINOScinos.net HQ: Frimley, United KingdomReported employees: 51-200 | Frimley, United Kingdom | 51-200 | Exact match | 120 contacts → |
“Cinos is an industry-leading, agile, and innovative systems integrator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | European Electroniqueeuroele.com HQ: Eynsham, United KingdomReported employees: 51-200 | Eynsham, United Kingdom | 51-200 | Exact match | 115 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Total Integrated Solutions TIS LTDtis.co.uk HQ: Mansfield, United KingdomReported employees: 51-200 | Mansfield, United Kingdom | 51-200 | Exact match | 102 contacts → |
“Better protect your people, places and spaces.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Key2key2.it HQ: Rome, United KingdomReported employees: 51-200 | Rome, United Kingdom | 51-200 | Exact match | 96 contacts → |
“Key2 is a company specialized in IT Consultancy, Software Development, Systems Integration, learning services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Adsyst Automation Limitedadsyst.co.uk HQ: Yateley, United KingdomReported employees: 51-200 | Yateley, United Kingdom | 51-200 | Exact match | 95 contacts → |
“As a System Integrator for over 37 years, Adsyst (Automation) Ltd has been providing complex Control Systems for Process Control, Automation and Telemetry to customers worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Twistedpair LTDtwistedpair.co.uk HQ: Portsmouth, United KingdomReported employees: 51-200 | Portsmouth, United Kingdom | 51-200 | Exact match | 91 contacts → |
“Connecting people, places, and possibilities through transformative workplace technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Nephos Technologiesnephostechnologies.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Nephos Technologies is an independent data systems integrator, specialising in helping organisations transform the way they store, manage and protect their data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Bluesmith Information Systemsbluesmithis.com HQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Bluesmith specialises in bespoke systems for Blue Chip and government clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | ADM Computingadm-computing.co.uk HQ: Canterbury, United KingdomReported employees: 51-200 | Canterbury, United Kingdom | 51-200 | Exact match | 76 contacts → |
“ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | CSTcst.co.uk HQ: Wooburn Green, United KingdomReported employees: 51-200 | Wooburn Green, United Kingdom | 51-200 | Exact match | 76 contacts → |
“CST is an I.T.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Denca Controls LTDdenca.com HQ: Widnes, United KingdomReported employees: 51-200 | Widnes, United Kingdom | 51-200 | Exact match | 75 contacts → |
“Renowned across numerous sectors as 'the systems integrator of choice', we have built a reputation on delivering high quality, value-for-money solutions that enhance production…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Arlanis Reply UKreply.com HQ: Westminster, United KingdomReported employees: 11-50 | Westminster, United Kingdom | 11-50 | Exact match | 73 contacts → |
“Arlanis Reply is the Reply Group company specializing in Salesforce implementations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Infoteck Solutionsinfoteck.solutions HQ: Holborn, United KingdomReported employees: 51-200 | Holborn, United Kingdom | 51-200 | Exact match | 68 contacts → |
“Infoteck Solutions: Empowering Integration and Automation Welcome to Infoteck Solutions, your trusted partner in seamless integration and efficient automation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Eureka Solutions Scotland LTDeurekasolutions.co.uk HQ: East Kilbride, United KingdomReported employees: 51-200 | East Kilbride, United Kingdom | 51-200 | Exact match | 66 contacts → |
“At Eureka Solutions, we specialise in implementing powerful cloud-based systems that have the potential to revolutionise your business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Idns LTDidns.co.uk HQ: Bolton, United KingdomReported employees: 51-200 | Bolton, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Technology That Matters.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Forfusion LTDforfusion.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 63 contacts → |
“Empowering through digital transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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IT system integrators: dataset insights
November 6, 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
726 records in the displayed employee bands.
19 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 745 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: November 6, 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 system integrators by metro
Questions about this company list
What does Exact match mean for IT system 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 system integrators did RevenueBase find based in the United Kingdom?
The saved snapshot records 745 matching company records, 19,759 tracked contacts and 8,896 verified emails. The public preview displays 23 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 23 IT system integrators based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/it-system-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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