Company lists · Data refreshed September 2026
Top 24 SaaS app development agencies based in the United Kingdom
RevenueBase identified 1,819 SaaS app development agencies headquartered in the United Kingdom as of September 2026 and tracks 15,353 professional contacts across them, including 2,571 with verified work emails. London is the largest hub.
This list covers SaaS app development agencies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 24 largest SaaS app development agencies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,581 contacts → | ||||
Indirect evidence “We leverage the latest web and mobile technologies to build, grow and support your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 221 contacts → | ||||
Indirect evidence “At Dreams Technologies, we’re more than software engineers, we’re digital transformation partners.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 221 contacts → | ||||
Partial evidence “Krify is a results-driven technology company specializing in crafting user-centric mobile apps, web applications, and software solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 201 contacts → | ||||
Partial evidence “Leighton is a software development business that builds high performing teams and develops successful software applications for its customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 185 contacts → | ||||
Indirect evidence “We build software solutions, partnering with ambitious clients looking to grow by harnessing next-generation technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 163 contacts → | ||||
Indirect evidence “Scrums.com is the Software Engineering Orchestration Platform (SEOP).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 154 contacts → | ||||
Indirect evidence “Winner of the Best AI Company Award by The Netty Awards · Headquartered in London, powered by a worldwide team of engineers across Europe, Egypt, and the Americas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 149 contacts → | ||||
Indirect evidence “IIH Global is a global technology solutions company helping startups, SMEs, and enterprises in the UK, US, Europe, Australia, and Canada build the digital tools they need to run…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 138 contacts → | ||||
Indirect evidence “For over 22 years, Intagleo has been a trusted partner for businesses worldwide and US Primes, empowering them to achieve their digital transformation goals through innovative…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 132 contacts → | ||||
Strong evidence “Incorporated in 2014 and headquartered in the UK, Synycs Group is a CMMI Level 4 industry-leading & most reliable software and mobile app development company known for delivering…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 84 contacts → | ||||
Indirect evidence “Conovo Technologies builds AI automation, agents and custom software for startups and SMEs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 79 contacts → | ||||
Indirect evidence “Hybytes is an offshore/domestic solution provider for IT and Management to business and industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 76 contacts → | ||||
Indirect evidence “VJSAR is a trusted IT solutions and services provider, offering specialised expertise across Microsoft Azure, Google Cloud Platform, and Amazon Web Services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 75 contacts → | ||||
Indirect evidence “Kloia is an AWS Premier Tier Services Partner that specializes in DevOps/Cloud, Application Modernization, Software Testing and Generative AI.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 75 contacts → | ||||
Indirect evidence “Headquartered at Reading, Berkshire in United Kingdom, Bit Wave Solutions enables global businesses to build their future by directing clients’ innovation & customization agenda.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 74 contacts → | ||||
Indirect evidence “Turn Up Technologies is a digital growth IT firm headquartered in London, UK with offices across the Texas, UAE, Canada, and Pakistan.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 73 contacts → | ||||
Partial evidence “Timspark is a software development company/hub that creates custom software solutions to fit clients’ business needs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 72 contacts → | ||||
Partial evidence “TX Dynamics is a software development company, that helps businesses with product design, web and application development, and technology acceleration.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 69 contacts → | ||||
Partial evidence “PODTECH is a software development company with a comprehensive suite of services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 64 contacts → | ||||
Partial evidence “Versatile Commerce is an innovative bespoke software development company headquartered in the UK, with offices in the US and India.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 63 contacts → | ||||
Indirect evidence “Codex makes software simple, strategic, and reliable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 62 contacts → | ||||
Indirect evidence “We design, develop and deliver business transformation through the power of the cloud Knowing how and where to invest in digital opportunities is vital to the growth of any…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 61 contacts → | ||||
Indirect evidence “Ghyston is an award-winning UK software company based in Bristol.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 59 contacts → | ||||
Indirect evidence “Runibex is a technology products company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: SaaS app development agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names SaaS app development agencies.
- Partial evidence
- Its own public description names part of SaaS app development agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name SaaS app development agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 24 of 1,819 SaaS app development agencies based in the United Kingdom
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SaaS app development agencies based in the United Kingdom at a glance
As of Sep 29, 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 1,819 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among SaaS app development agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “SaaS app development agencies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names SaaS app development agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among SaaS app development agencies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 2,571 across the full list. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
SaaS app development agencies by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names SaaS app development agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many SaaS app development agencies are there based in the United Kingdom?
RevenueBase identified 1,819 SaaS app development agencies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Dotsquares, headquartered in London, tops this list with the largest team on record.
Which city has the most SaaS app development agencies?
London leads with 690 headquartered companies, followed by Manchester (66) and Bristol (33).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,571 verified decision-maker contacts tracked across these 1,819 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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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 Smart Search, 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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