Company lists · Data refreshed November 2026
Top 21 Custom api development services based in the United Kingdom
RevenueBase identified 55 company matches for custom api development services associated with the United Kingdom as of November 2026 and tracks 336 professional contacts across them, including 120 with verified work emails. London is the largest hub.
This list covers company matches for custom api development services 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 21 largest custom api development services based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 76 contacts → | ||||
Exact match “Integrella is a specialist IT services company with extensive experience across UK sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 15 contacts → | ||||
Exact match “A collective of brilliant and dedicated minds providing next-generation digital services and consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 9 contacts → | ||||
Exact match “Who we are?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 8 contacts → | ||||
Exact match “PNP Digital are Sheffield based software engineers, app developers and business process experts specialising in the development, implementation, and support of bespoke software…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 8 contacts → | ||||
Exact match “Crafting next-gen solutions for a digital world We're more than just problem solvers - we're passionate technology enthusiasts on a mission to empower businesses and individuals…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 6 contacts → | ||||
Exact match “Rare Earth Digital helps organisations modernise and optimise their technology through smart integrations, APIs, automation, cloud solutions, and custom software that actually…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 6 contacts → | ||||
Exact match “At Renav, we help businesses move from fragmented systems to fully integrated digital platforms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 6 contacts → | ||||
Exact match “Your trusted partner for API and Integration Ecosystem transformations - Military precision, expertly executed."We believe that what is expected of your systems integrator is…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 6 contacts → | ||||
Exact match “Cosoft is a UK software development and integration specialist helping Channel businesses connect and enhance the software they rely on every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match “Merto Software Solutions is a UK-based software development and technology consulting company helping businesses build smarter, more efficient systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 5 contacts → | ||||
Exact match “Create better API connections - We help forward-thinking trading organisations to create and manage better API connections with their trading counter-parties, through a unique…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “Digit-Blast is a Leeds-based software development company specialising in textile e-commerce, bespoke business systems, integrations and AI transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “Integration is about much more than just technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match “Integral Zone, a MuleSoft & Salesforce partner, is at the forefront of API integration and product innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match “8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “Flexiweb.co is a UK registered technology digital driven company with an international presence in India and United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 1 contacts → | ||||
Exact match “See website” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match “API Solution Development Looking to develop your API solutions but not sure where to start?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 1 contacts → | ||||
Exact match “At Refresh Creative, we design and build bespoke applications that support day-to-day operations, streamline internal processes, and improve how businesses interact with their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “At Sim City we look to provide top-class IT services to meet clients needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “injo solutions ltd is a software consultancy specialising in bespoke software development and integration services.” 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 “custom api development services”. 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 21 of 55 custom api development services based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 120 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Custom api development services 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 55 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 “custom api development services” 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 120 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.
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 “custom api development services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many custom api development services are there based in the United Kingdom?
RevenueBase identified 55 company matches for custom api development services 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?
Integrella tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most custom api development services?
London leads with 21 company records, followed by Leeds (2) and Newcastle Upon Tyne (2).
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 120 professional contacts with verified work emails tracked across these 55 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 55 custom api development services based in the United Kingdom. Start with a free account, no credit card.
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Custom api development services by geography
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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Company intelligence · public preview
Top 21 custom api development services 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 55 matching company records for custom api development services based in the United Kingdom, with 336 tracked contacts and 120 verified work emails.
This public preview shows 21 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 21 custom api development services 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 |  Integrellaintegrella.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 76 contacts → |
“Integrella is a specialist IT services company with extensive experience across UK sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Magna Softwaremagnasoftware.co.ukHQ: Belfast, United KingdomReported employees: 1-10 | Belfast, United Kingdom | 1-10 | Exact match | 15 contacts → |
“A collective of brilliant and dedicated minds providing next-generation digital services and consulting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Atula Technologies LTDatulatech.comHQ: Stokenchurch, United KingdomReported employees: 11-50 | Stokenchurch, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Who we are?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  PNP Digitalpnp.digitalHQ: Sheffield, United KingdomReported employees: 1-10 | Sheffield, United Kingdom | 1-10 | Exact match | 8 contacts → |
“PNP Digital are Sheffield based software engineers, app developers and business process experts specialising in the development, implementation, and support of bespoke software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Avantao Technologiesavantao.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 8 contacts → |
“Crafting next-gen solutions for a digital world We're more than just problem solvers - we're passionate technology enthusiasts on a mission to empower businesses and individuals…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Rare Earth Digitalrareearthdigital.comHQ: Nantwich, United KingdomReported employees: 11-50 | Nantwich, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Rare Earth Digital helps organisations modernise and optimise their technology through smart integrations, APIs, automation, cloud solutions, and custom software that actually…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Renav Technologiesrenav.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“At Renav, we help businesses move from fragmented systems to fully integrated digital platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Quadcorps LTDquadcorps.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Your trusted partner for API and Integration Ecosystem transformations - Military precision, expertly executed."We believe that what is expected of your systems integrator is…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cosoftcosoft.co.ukHQ: Lewes, United KingdomReported employees: 1-10 | Lewes, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Cosoft is a UK software development and integration specialist helping Channel businesses connect and enhance the software they rely on every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Merto Software Solutionsmertosolutions.comHQ: Windsor, United KingdomReported employees: 1-10 | Windsor, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Merto Software Solutions is a UK-based software development and technology consulting company helping businesses build smarter, more efficient systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Fixspecfixspec.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Create better API connections - We help forward-thinking trading organisations to create and manage better API connections with their trading counter-parties, through a unique…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Digit-Blastdigit-blast.comHQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Digit-Blast is a Leeds-based software development company specialising in textile e-commerce, bespoke business systems, integrations and AI transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Wheevewheeve.co.ukHQ: Watford, United KingdomReported employees: 1-10 | Watford, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Integration is about much more than just technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Integral Zoneintegralzone.comHQ: Reading, United KingdomReported employees: 11-50 | Reading, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Integral Zone, a MuleSoft & Salesforce partner, is at the forefront of API integration and product innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  8 Signals Limited8signals.comHQ: Newcastle Upon Tyne, United KingdomReported employees: 1-10 | Newcastle Upon Tyne, United Kingdom | 1-10 | Exact match | 2 contacts → |
“8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Flexiweb.co Flexible WEB Strategies LTDflexiweb.coHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Flexiweb.co is a UK registered technology digital driven company with an international presence in India and United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Ncode Systems Corpncodesystems.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 1 contacts → |
“See website” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Plexicate LTDplexicate.comHQ: Weybridge, United KingdomReported employees: 1-10 | Weybridge, United Kingdom | 1-10 | Exact match | 1 contacts → |
“API Solution Development Looking to develop your API solutions but not sure where to start?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Refresh Creativerefreshcreative.comHQ: Swansea, United KingdomReported employees: 1-10 | Swansea, United Kingdom | 1-10 | Exact match | 1 contacts → |
“At Refresh Creative, we design and build bespoke applications that support day-to-day operations, streamline internal processes, and improve how businesses interact with their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  SIM City LTDsimcity.devHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“At Sim City we look to provide top-class IT services to meet clients needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Injo Solutions LTDinjo.co.ukHQ: Paisley, United KingdomReported employees: 1-10 | Paisley, United Kingdom | 1-10 | Exact match | 1 contacts → |
“injo solutions ltd is a software consultancy specialising in bespoke software development and integration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 55 company matches
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Custom api development services: 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
54 records in the displayed employee bands.
1 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 55 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 ↗
Questions about this company list
What does Exact match mean for custom api development services?
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 custom api development services did RevenueBase find based in the United Kingdom?
The saved snapshot records 55 matching company records, 336 tracked contacts and 120 verified emails. The public preview displays 21 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
Custom api development services by geography
Cite this list
RevenueBase Data Team. Top 21 custom api development services based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/custom-api-development-services/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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- Lists A-Z
- New lists
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Company intelligence · public preview
Top 21 custom api development services based in the United Kingdom
RevenueBase records 55 matching company records for custom api development services based in the United Kingdom, with 336 tracked contacts and 120 verified work emails.
This public preview shows 21 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 21 custom api development services 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 | Integrellaintegrella.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 76 contacts → |
“Integrella is a specialist IT services company with extensive experience across UK sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Magna Softwaremagnasoftware.co.uk HQ: Belfast, United KingdomReported employees: 1-10 | Belfast, United Kingdom | 1-10 | Exact match | 15 contacts → |
“A collective of brilliant and dedicated minds providing next-generation digital services and consulting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atula Technologies LTDatulatech.com HQ: Stokenchurch, United KingdomReported employees: 11-50 | Stokenchurch, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Who we are?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PNP Digitalpnp.digital HQ: Sheffield, United KingdomReported employees: 1-10 | Sheffield, United Kingdom | 1-10 | Exact match | 8 contacts → |
“PNP Digital are Sheffield based software engineers, app developers and business process experts specialising in the development, implementation, and support of bespoke software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Avantao Technologiesavantao.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 8 contacts → |
“Crafting next-gen solutions for a digital world We're more than just problem solvers - we're passionate technology enthusiasts on a mission to empower businesses and individuals…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Rare Earth Digitalrareearthdigital.com HQ: Nantwich, United KingdomReported employees: 11-50 | Nantwich, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Rare Earth Digital helps organisations modernise and optimise their technology through smart integrations, APIs, automation, cloud solutions, and custom software that actually…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Renav Technologiesrenav.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“At Renav, we help businesses move from fragmented systems to fully integrated digital platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Quadcorps LTDquadcorps.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Your trusted partner for API and Integration Ecosystem transformations - Military precision, expertly executed."We believe that what is expected of your systems integrator is…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cosoftcosoft.co.uk HQ: Lewes, United KingdomReported employees: 1-10 | Lewes, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Cosoft is a UK software development and integration specialist helping Channel businesses connect and enhance the software they rely on every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Merto Software Solutionsmertosolutions.com HQ: Windsor, United KingdomReported employees: 1-10 | Windsor, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Merto Software Solutions is a UK-based software development and technology consulting company helping businesses build smarter, more efficient systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Fixspecfixspec.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Create better API connections - We help forward-thinking trading organisations to create and manage better API connections with their trading counter-parties, through a unique…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Digit-Blastdigit-blast.com HQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Digit-Blast is a Leeds-based software development company specialising in textile e-commerce, bespoke business systems, integrations and AI transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Wheevewheeve.co.uk HQ: Watford, United KingdomReported employees: 1-10 | Watford, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Integration is about much more than just technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Integral Zoneintegralzone.com HQ: Reading, United KingdomReported employees: 11-50 | Reading, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Integral Zone, a MuleSoft & Salesforce partner, is at the forefront of API integration and product innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 8 Signals Limited8signals.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 1-10 | Newcastle Upon Tyne, United Kingdom | 1-10 | Exact match | 2 contacts → |
“8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Flexiweb.co Flexible WEB Strategies LTDflexiweb.co HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Flexiweb.co is a UK registered technology digital driven company with an international presence in India and United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ncode Systems Corpncodesystems.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 1 contacts → |
“See website” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Plexicate LTDplexicate.com HQ: Weybridge, United KingdomReported employees: 1-10 | Weybridge, United Kingdom | 1-10 | Exact match | 1 contacts → |
“API Solution Development Looking to develop your API solutions but not sure where to start?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Refresh Creativerefreshcreative.com HQ: Swansea, United KingdomReported employees: 1-10 | Swansea, United Kingdom | 1-10 | Exact match | 1 contacts → |
“At Refresh Creative, we design and build bespoke applications that support day-to-day operations, streamline internal processes, and improve how businesses interact with their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SIM City LTDsimcity.dev HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“At Sim City we look to provide top-class IT services to meet clients needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Injo Solutions LTDinjo.co.uk HQ: Paisley, United KingdomReported employees: 1-10 | Paisley, United Kingdom | 1-10 | Exact match | 1 contacts → |
“injo solutions ltd is a software consultancy specialising in bespoke software development and integration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 55 company matches
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Custom api development services: 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
54 records in the displayed employee bands.
1 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 55 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 ↗
Questions about this company list
What does Exact match mean for custom api development services?
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 custom api development services did RevenueBase find based in the United Kingdom?
The saved snapshot records 55 matching company records, 336 tracked contacts and 120 verified emails. The public preview displays 21 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
Custom api development services by geography
Cite this list
RevenueBase Data Team. Top 21 custom api development services based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/custom-api-development-services/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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