Company lists · Data refreshed September 2026

Top 24 Responsive web design developers based in London, United Kingdom

Name: Responsive web design developers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 188 companies tracked

RevenueBase identified 188 company matches for responsive web design developers associated with London, United Kingdom as of September 2026 and tracks 625 professional contacts across them, including 107 with verified work emails and 40 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for responsive web design developers 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 13, 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 13, 2026 How this list was built

188Companies

625Contacts tracked

107Verified emails

40Mobile numbers

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The 24 largest responsive web design developers based in London, United Kingdom

Ranked by team size

Top 24 of 188 company matches for responsive web design developers based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 13, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Yellowball	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	26 contacts →
	Exact match “We’re a hand-picked global team of exceptional designers, engineers, SEO experts and paid media specialists, crafting websites and digital experience that work as hard as you do.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
2	Vsourz	Exact match	London, United KingdomHQ recorded Sep 13, 2026	201-500	17 contacts →
	Exact match “Vsourz is an international technology partner helping organisations turn digital ambition into production-ready outcomes.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
3	waat.eu	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	17 contacts →
	Exact match “WAAT is a multi-talented team of developers, engineers, designers and marketing experts with a vast wealth of experience in delivering websites, systems and apps.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
4	APP Genie	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	17 contacts →
	Exact match “App Genie (appg.co) is a mobile app development agency founded in 2022, with its product team based in Istanbul, Türkiye.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
5	TOIMI	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	15 contacts →
	Exact match “Toimi is a leader in web and mobile development, with more than 8 years of experience in crafting software solutions for small to medium-sized businesses and enterprise-level…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
6	Binary Vision	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	12 contacts →
	Exact match “Hello, we’re Binary Vision A leading force in digital for nearly 40 years Some people think digital is all about technology.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
7	DAM Digital	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	8 contacts →
	Exact match “Nothing quite beats the feeling of achievement.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
8	Digipeak Agency	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	7 contacts →
	Exact match “Digipeak is a mobile-priority digital marketing agency specializing in Website Design, SEO, Pay Per Click, UI/UX design and Mobile App Ads.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
9	Subism	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	7 contacts →
	Exact match “Whether you're raising funds and awareness for a cause or filling a festival venue, you are building a community around something that matters.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
10	Inktrap	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	6 contacts →
	Exact match “Inktrap is a design and development studio that creates brilliant interfaces, websites and apps for innovative clients, from ambitious startups to established businesses.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
11	Design & Build CO	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	5 contacts →
	Exact match “Design & Build takes a bespoke approach to every project, working closely with our clients to balance their unique brand and business objectives.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
12	Aminocreates	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	4 contacts →
	Exact match “We build better businesses by creating intuitive websites - connecting brands to consumers.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
13	Isteps	Exact match	London, United KingdomHQ recorded Sep 13, 2026	11-50	4 contacts →
	Exact match “iSteps takes innovative, integrated, and inspiring steps to help companies transform their ideas into outstanding digital products and services to elevate their business.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
14	Digital Product People	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	4 contacts →
	Exact match “At Digital Product People, we are UI/UX Designers committed to creating impactful digital products through our expertise.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
15	LANDD	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	4 contacts →
	Exact match “Founded in 2015, we are an experienced, creative and talented web design and build studio based in London.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
16	Arktik	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	3 contacts →
	Exact match “An award-winning studio specialising in the creative development of all things digital.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
17	Pixeldesk Studios	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	3 contacts →
	Exact match “A digital agency with solid design and development experience.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
18	Codem Digital LTD	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “All encompassing london based digital agency.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
19	Studio Forme	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “At Forme, we believe that digital experiences should be both beautiful and accessible-for everyone.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
20	AZUL	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Azul is an international creative digital agency that specialises in web design and web development.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
21	Biff NEW Media	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Biff is a two-person creative studio with over 20 years of experience building web and mobile experiences that actually work, beautifully.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
22	Rambunctious	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Rambunctious was created with the goal of making tech straightforward for growing businesses.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
23	Capturefour LTD	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “We are a small full-service studio proudly based in London, UK that focuses on digital design and development.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
24	Almanac Digital	Exact match	London, United KingdomHQ recorded Sep 13, 2026	1-10	2 contacts →
	Exact match “Almanac Digital is a small digital services agency.” Recorded in the RevenueBase company graph · Sep 13, 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 “responsive web design developers”. 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 24 of 188 responsive web design developers based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 107 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Responsive web design developers based in London, United Kingdom at a glance

As of Sep 13, 2026

17.1%Verified-email coverage

6.4%Mobile-number coverage

3.3Average contacts per company

1-10Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

146

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

800–30

2731–60

061–90

090–180

0180+

Company record updated

Median 65.0d

00–30

24331–60

27361–90

7290–180

37180+

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 “responsive web design developers” 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 107 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 13, 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 “responsive web design developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many responsive web design developers are there based in London, United Kingdom?

RevenueBase identified 188 company matches for responsive web design developers 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?

Yellowball 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 responsive web design developers?

London leads the United Kingdom with 74 company records, followed by Manchester (7) and Glasgow (5).

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 107 professional contacts with verified work emails tracked across these 188 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 13, 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.