Company lists · Data refreshed September 2026

Top 25 Responsive web design firms based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 396 companies tracked

RevenueBase identified 396 responsive web design firms headquartered in the United Kingdom as of September 2026 and tracks 1,387 professional contacts across them, including 324 with verified work emails and 114 with mobile numbers. London is the largest hub.

This list covers responsive web design firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 5, 2026 86% judged on-target in blind review

396Companies

1,387Contacts tracked

324Verified emails

114Mobile numbers

Explore all 396 companies → Free signup · no credit card · 500 free credits

The 25 largest responsive web design firms based in the United Kingdom

Ranked by team size

Top 25 of 396 responsive web design firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names responsive web design firms: 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	BuiltbypixelPartial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	11-50	33
	“A digital agency based in Manchester who specialise in the design, development and architecture of Mobile Apps, Website and Online Software.” Source: company website · checked Sep 5, 2026
2	DREWLIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	22
	“We're on a quest to change the way sites are built.” Source: company website · checked Sep 5, 2026
3	VsourzIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	17
	“Vsourz is an international technology partner helping organisations turn digital ambition into production-ready outcomes.” Source: company website · checked Sep 5, 2026
4	waat.euPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	17
	“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.” Source: company website · checked Sep 5, 2026
5	APP GenieIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	17
	“App Genie (appg.co) is a mobile app development agency founded in 2022, with its product team based in Istanbul, Türkiye.” Source: company website · checked Sep 5, 2026
6	SimpleclickIndirect evidence	Ipswich, United KingdomHQ checked Sep 5, 2026	11-50	14
	“UK Dev Awards 2024 Finalist** With more than 15 years of experience, we are proud to have developed a reputation for successful and innovative software development.” Source: company website · checked Sep 5, 2026
7	Binary VisionIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	12
	“Hello, we’re Binary Vision A leading force in digital for nearly 40 years Some people think digital is all about technology.” Source: company website · checked Sep 5, 2026
8	Take That LimitedIndirect evidence	Harrogate, United KingdomHQ checked Sep 5, 2026	11-50	12
	“We are an innovative, forward-thinking marketing agency that has been producing solid results for nearly 30 years.” Source: company website · checked Sep 5, 2026
9	LightflowsPartial evidence	Guildford, United KingdomHQ checked Sep 5, 2026	11-50	12
	“Lightflows are web, software and app development leaders based in Guildford, in the heart of leafy Surrey.” Source: company website · checked Sep 5, 2026
10	CEFARPartial evidence	Leeds, United KingdomHQ checked Sep 5, 2026	11-50	11
	“When we started Cefar, the goal was never to become another web agency.” Source: company website · checked Sep 5, 2026
11	Layers StudioIndirect evidence	Gateshead, United KingdomHQ checked Sep 5, 2026	11-50	10
	“We don't just build websites, we craft digital experiences.” Source: company website · checked Sep 5, 2026
12	COREStrong evidence	Cardiff, United KingdomHQ checked Sep 5, 2026	11-50	10
	“Web, brand design and digital marketing, working as one integrated team.” Source: company website · checked Sep 5, 2026
13	Hambly FreemanPartial evidence	Exeter, United KingdomHQ checked Sep 5, 2026	11-50	9
	“We are a highly experienced and personable team of designers and developers, based in the centre of Exeter, UK.” Source: company website · checked Sep 5, 2026
14	Gearedapp LTDIndirect evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	1-10	9
	“At GearedApp we build solutions based on your users’ mobile habits.” Source: company website · checked Sep 5, 2026
15	Adcentric WEB Design & MarketingIndirect evidence	Rochester, United KingdomHQ checked Sep 5, 2026	1-10	8
	“We have a passion for creating visually stunning and user-friendly websites tailored to our clients' unique needs.” Source: company website · checked Sep 5, 2026
16	Atto PartnersPartial evidence	Belfast, United KingdomHQ checked Sep 5, 2026	1-10	8
	“Atto Partners is a creative team of designers and developers who care about their work, and the effect it has.” Source: company website · checked Sep 5, 2026
17	Ne6Indirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026	11-50	7
	“We are a creative digital agency focused on growing brands online.” Source: company website · checked Sep 5, 2026
18	Jolly Good WEBStrong evidence	Lincoln, United KingdomHQ checked Sep 5, 2026	1-10	7
	“Jolly Good Web is a veteran-owned, fully UK-based web design and development agency, delivering highly functional websites designed to drive your success.” Source: company website · checked Sep 5, 2026
19	SubismIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	7
	“Whether you're raising funds and awareness for a cause or filling a festival venue, you are building a community around something that matters.” Source: company website · checked Sep 5, 2026
20	Element Studio LTDIndirect evidence	Cheltenham, United KingdomHQ checked Sep 5, 2026	1-10	6
	“Element Studio is a small, agile digital agency based in Cheltenham, Gloucestershire.” Source: company website · checked Sep 5, 2026
21	InktrapPartial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	6
	“Inktrap is a design and development studio that creates brilliant interfaces, websites and apps for innovative clients, from ambitious startups to established businesses.” Source: company website · checked Sep 5, 2026
22	NeontribeIndirect evidence	Norwich, United KingdomHQ checked Sep 5, 2026	11-50	6
	“Neontribe is a software development company.” Source: company website · checked Sep 5, 2026
23	Greentech Apps LimitedIndirect evidence	Cambridge, United KingdomHQ checked Sep 5, 2026	11-50	6
	“Welcome to our page!” Source: company website · checked Sep 5, 2026
24	Coax CreativePartial evidence	Chester, United KingdomHQ checked Sep 5, 2026	1-10	6
	“We create bespoke digital designs, platforms and products.” Source: company website · checked Sep 5, 2026
25	TalmeePartial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	1-10	5
	“Talmee Ltd is a digital partner rooted in Manchester, specializing in seamless Mobile App Development, UI/UX design and AI-driven solutions.” Source: company website · checked Sep 5, 2026

Showing 25 of 396 responsive web design firms based in the United Kingdom

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Responsive web design firms based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 143 HQs

114Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

322

11-50

51-200

201-500

Verified emails by last verification

0–30

299

31–60

61–90

90–180

180+

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 responsive web design firms, 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 the United Kingdom whose own description of what they do matches “responsive web design firms”. 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 responsive web design firms, 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 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, 324 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 5, 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.

Responsive web design firms by metro

Responsive web design firms in London143

Frequently asked

How many responsive web design firms are there based in the United Kingdom?

RevenueBase identified 396 responsive web design firms 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?

Builtbypixel, headquartered in Manchester Manchester, tops this list with the largest team on record.

Which city has the most responsive web design firms?

London leads with 143 headquartered companies, followed by Manchester (13) and Brighton (7).

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 324 verified decision-maker contacts tracked across these 396 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 5, 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.