Company lists · Data refreshed September 2026

Top 25 SaaS application development companies based in London, United Kingdom

Name: SaaS application development companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 680 companies tracked

RevenueBase identified 680 SaaS application development companies headquartered in London, United Kingdom as of September 2026 and tracks 6,726 professional contacts across them, including 752 with verified work emails. London is the largest hub.

This list covers SaaS application development companies headquartered in London, 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, how directly it supports the match, and when it was last checked. Data refreshed September 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

680Companies

6,726Contacts tracked

752Verified emails

Explore all 680 companies → Free signup · no credit card · 500 free credits

The 25 largest SaaS application development companies based in London, United Kingdom

Ranked by team size

Top 25 of 680 SaaS application development companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names SaaS application development companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	DotsquaresIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	501-1,000	1,581
	“We leverage the latest web and mobile technologies to build, grow and support your business.” Source: company website · checked Sep 6, 2026
2	Dreams Technologies, UK & IndiaIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	221
	“At Dreams Technologies, we’re more than software engineers, we’re digital transformation partners.” Source: company website · checked Sep 6, 2026
3	KRIFYPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	221
	“Krify is a results-driven technology company specializing in crafting user-centric mobile apps, web applications, and software solutions.” Source: company website · checked Sep 6, 2026
4	scrums.comIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	163
	“Scrums.com is the Software Engineering Orchestration Platform (SEOP).” Source: company website · checked Sep 6, 2026
5	Opinov8Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	154
	“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: company website · checked Sep 6, 2026
6	Synycs GroupPartial evidence	London, United KingdomHQ checked Sep 6, 2026	201-500	132
	“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: company website · checked Sep 6, 2026
7	TimsparkPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	73
	“Timspark is a software development company/hub that creates custom software solutions to fit clients’ business needs.” Source: company website · checked Sep 6, 2026
8	AircuryStrong evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	55
	“Aircury offers high quality software development for the education and non-profit sectors We specialise in- Full-stack application development for web and mobile- API and…” Source: company website · checked Sep 6, 2026
9	Satva SoftechIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	53
	“Established in 2015, SATVA Softech has carved a distinguished niche in the global technology landscape.” Source: company website · checked Sep 6, 2026
10	WarrgyizmorschPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	51
	“Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: company website · checked Sep 6, 2026
11	Insight International UK LTDPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	50
	“We provide Software Development, Maintenance and Other Related IT Services, across spectrum, depending on individual client’s needs and dependability on us.” Source: company website · checked Sep 6, 2026
12	SKO SystemsIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	45
	“At SKO Systems, we engineer enterprise-grade software ecosystems designed for the unique, high-stakes realities of the maritime environment.” Source: company website · checked Sep 6, 2026
13	UnibrixPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	44
	“Unibrix provides web and app development services for clients all over the world.” Source: company website · checked Sep 6, 2026
14	TaramsysStrong evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	39
	“Your premium software development partner for mobile, white label & enterprise applications.” Source: company website · checked Sep 6, 2026
15	MifortPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	39
	“We are a software development outsourcing company with 9+ years in business and 200+ successful projects.” Source: company website · checked Sep 6, 2026
16	SaqayaIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	36
	“At SAQAYA, we grow businesses by engineering technology that customers love!” Source: company website · checked Sep 6, 2026
17	Stallions TechnologiesIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	35
	“At Stallions Technologies, we passionately believe that we are successful in delivering excellence to our clients because we deliberately seek to hire 'Brilliant' people.” Source: company website · checked Sep 6, 2026
18	KernelicsIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	35
	“Kernelics is a passionate team of web and mobile software developers, product managers, designers, and QA engineers.” Source: company website · checked Sep 6, 2026
19	A-DevelopmentPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	35
	“A-development is a custom software development company that offers smart services for a wide range of businesses.” Source: company website · checked Sep 6, 2026
20	Blackwater TechIndirect evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	33
	“At Blackwater Tech, we help clients accelerate growth and improve performance through tailored technology solutions.” Source: company website · checked Sep 6, 2026
21	digimeta.devPartial evidence	London, United KingdomHQ checked Sep 6, 2026	51-200	32
	“DIGIMETA is an AI-focused Software Development Partner headquartered in London, with offices in Gloucestershire & Bangalore.” Source: company website · checked Sep 6, 2026
22	SofteleganceStrong evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	30
	“Founded in 1993, SoftElegance is a custom software development company that has been providing reliable services for implementation of SaaS systems, sophisticated business…” Source: company website · checked Sep 6, 2026
23	ZentixPartial evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	30
	“ZentixSoft is a UK-based software development company helping businesses grow faster with AI, automation, and custom software.” Source: company website · checked Sep 6, 2026
24	CloudnesilPartial evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	29
	“Founded at 2013, cloudnesil takes a highly technical and innovative approach to development, ranging from utilising the latest toolsets to developing bespoke solutions for…” Source: company website · checked Sep 6, 2026
25	Incode Systems Web, Mobile & AI Product DevelopmentPartial evidence	London, United KingdomHQ checked Sep 6, 2026	11-50	28
	“We are a software development company that designs, develops, and deploys software solutions for organizations across industries.” Source: company website · checked Sep 6, 2026

Showing 25 of 680 SaaS application development companies based in London, United Kingdom

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SaaS application development companies based in London, United Kingdom at a glance

As of Sep 6, 2026

1-10Median size (employees)

LondonLargest hub · 680 HQs

Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

377

11-50

237

51-200

201-500

501-1,000

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 680 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 application development companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “SaaS application development companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among SaaS application development companies, and records with no verified work email. Companies headquartered outside London 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 an evidence 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, 752 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 6, 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 application development companies by metro in the United Kingdom

SaaS application development companies in London680
SaaS application development companies in Manchester67
SaaS application development companies in Birmingham32
SaaS application development companies in Bristol30
SaaS application development companies in Leeds28
SaaS application development companies in Glasgow26

Frequently asked

How many SaaS application development companies are there based in London, United Kingdom?

RevenueBase identified 680 SaaS application development companies headquartered in London, 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 application development companies?

London leads with 680 headquartered companies, followed by Manchester (67) and Birmingham (32).

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 752 verified decision-maker contacts tracked across these 680 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 6, 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 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.