Company lists · Data refreshed September 2026

Top 25 Startup software development agencies based in London, United Kingdom

RevenueBase identified 410 company matches for startup software development agencies associated with London, United Kingdom as of September 2026 and tracks 3,002 professional contacts across them, including 498 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for startup software development agencies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
410Companies
3,002Contacts tracked
498Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest startup software development agencies based in London, United Kingdom

Ranked by team size
Top 25 of 410 company matches for startup software development agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500163 contacts →

Exact match

“Scrums.com is the Software Engineering Orchestration Platform (SEOP).”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20096 contacts →

Exact match

“Xynotech is a provider of IT consulting and software development services that help companies overtake their competition.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20087 contacts →

Exact match

“We are Siya Tech, a startup studio where we partner with tech startups to fuel their growth.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20073 contacts →

Exact match

“Timspark is a software development company/hub that creates custom software solutions to fit clients’ business needs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20051 contacts →

Exact match

“Appolica is a venture studio on a mission to turn ambitious tech-driven ventures into market leaders.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20046 contacts →

Exact match

“Blockmob Labs is a full-stack product engineering studio building production-grade software across Web3, AI, fintech, SaaS, mobile, and cloud infrastructure.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5042 contacts →

Exact match

“Limeup is an application & software development company.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20039 contacts →

Exact match

“DevGrid was Founded in 2015 by a group of seasoned tech entrepreneurs on a mission to make outsourced product development a positive and productive experience.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20039 contacts →

Exact match

“We are a software development outsourcing company with 9+ years in business and 200+ successful projects.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5038 contacts →

Exact match

“We are a professional team of senior software engineers with more than 10 years of experience in Java, Web, and Mobile technology stacks.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5037 contacts →

Exact match

“CodeLeap partners with ambitious companies to build and scale digital products.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5037 contacts →

Exact match

“We are a leading global software development company that enables disruptive startups and enterprises to bridge the gap between Ideas and Reality through innovative web and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5035 contacts →

Exact match

“AVAMAE is a London-based product development agency, building bespoke mobile, software and web applications since 2011.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5035 contacts →

Exact match

“Kernelics is a passionate team of web and mobile software developers, product managers, designers, and QA engineers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5035 contacts →

Exact match

“We are reinventing how startups grow their software development teams by bridging the gap between outsourcing and in-house hiring.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5030 contacts →

Exact match

“ZentixSoft is a UK-based software development company helping businesses grow faster with AI, automation, and custom software.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5029 contacts →

Exact match

“Mobile & Web Digital Solutions for Startups & Businesses Count on TopDevs full-cycle mobile app and web development outsourcing services or hire the IT experts you need to augment…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20027 contacts →

Exact match

“Cube10 🟪 | Empowering Digital Transformation About Us: At Cube10, we are at the intersection of innovation and robust tech solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5024 contacts →

Exact match

“At 4xxi, we specialise in launching startups and crafting exceptional products that revolutionise industries and transform lives.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20023 contacts →

Exact match

“Sensi Labs is an innovation-driven software house founded in 2012 with offices in Poland and the UK.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5023 contacts →

Exact match

“TGA Digital is a software engineering consultancy focussed on delivering high quality software projects as well as consulting, due diligence, trouble shooting and fund raising.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“At KeyToTech, we turn ideas into scalable software products.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20021 contacts →

Exact match

“Ngoar is a pioneering software solutions and technology company.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5020 contacts →

Exact match

“DevsStream provides software development solutions and services all over the world.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5019 contacts →

Exact match

“Webermelon is a website & software development company for your SaaS, PaaS and WordPress websites.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 410 startup software development agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 498 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Startup software development agencies based in London, United Kingdom at a glance

As of Sep 29, 2026
16.6%Verified-email coverage
7.3Average contacts per company
1-10Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
249
11-50
137
51-200
18
201-500
4
501-1,000
2

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 410 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 London, United Kingdom whose business descriptions match “startup software development agencies” 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 498 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 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.

Startup software development agencies by metro in the United Kingdom

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 “startup software development agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many startup software development agencies are there based in London, United Kingdom?

RevenueBase identified 410 company matches for startup software development agencies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

scrums.com tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most startup software development agencies?

London leads the United Kingdom with 410 company records, followed by Manchester (27) and Birmingham (18).

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 498 professional contacts with verified work emails tracked across these 410 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 410 startup software development agencies based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.