Company lists · Data refreshed September 2026

Top 25 B2B website development agencies based in London, United Kingdom

Name: B2B website development agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 758 companies tracked

RevenueBase identified 758 B2B website development agencies headquartered in London, United Kingdom as of September 2026 and tracks 13,694 professional contacts across them, including 980 with verified work emails. London is the largest hub.

This list covers B2B website development agencies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

758Companies

13,694Contacts tracked

980Verified emails

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The 25 largest B2B website development agencies based in London, United Kingdom

Ranked by team size

Top 25 of 758 B2B website development agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to B2B website development agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Qogita	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	184 contacts →
	Partial evidence “Qogita is a leading global wholesale B2B platform that offers a wide variety of products, brands and categories across geographies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Publicis PRO	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	139 contacts →
	Partial evidence “Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Source: RevenueBase Database · checked Sep 21, 2026
3	Giant Digital B Corp	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	122 contacts →
	Indirect evidence “We’re Giant Digital - a team of passionate problem-solvers who love helping charities and ethical organisations do good.” Source: RevenueBase Database · checked Sep 21, 2026
4	Ledger Bennett	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	93 contacts →
	Indirect evidence “We’re Ledger Bennett.” Source: RevenueBase Database · checked Sep 21, 2026
5	Internal Results	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	88 contacts →
	Partial evidence “The B2B Customer Acquisition Specialists Internal Results specialize in generating leads, promoting content, and driving brand awareness for B2B organizations worldwide through…” Source: RevenueBase Database · checked Sep 21, 2026
6	BBN	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	86 contacts →
	Partial evidence “THIS IS B2B WITHOUT BORDERS THIS IS BBN BBN breaks boundaries.” Source: RevenueBase Database · checked Sep 21, 2026
7	TOM & CO	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	79 contacts →
	Partial evidence “Who We Are: At Tom & Co, we’re a forward-thinking Adobe Commerce agency dedicated to designing, building, and maintaining high-performance e-commerce websites, always with the…” Source: RevenueBase Database · checked Sep 21, 2026
8	Williams Commerce	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	74 contacts →
	Indirect evidence “Established in 2009, Williams Commerce is a ecommerce agency focused on Building, Optimising and Growing ecommerce brands.” Source: RevenueBase Database · checked Sep 21, 2026
9	Propeller Group	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	71 contacts →
	Partial evidence “Propeller Group is a global B2B agency with an integrated approach to PR, content, and growth marketing.” Source: RevenueBase Database · checked Sep 21, 2026
10	FST	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	70 contacts →
	Partial evidence “We get B2B brands noticed in a world that isn’t looking” Source: RevenueBase Database · checked Sep 21, 2026
11	The Marketing Practice	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	51 contacts →
	Partial evidence “At The Marketing Practice, we’ve combined the best B2B specialists from across the globe in one business, with capabilities that stretch through the funnel, from brand to demand…” Source: RevenueBase Database · checked Sep 21, 2026
12	The Think Tank	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	44 contacts →
	Indirect evidence “We are The Think Tank: a fully-integrated, result-oriented agency based in Holborn, London.” Source: RevenueBase Database · checked Sep 21, 2026
13	KD WEB	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	44 contacts →
	Partial evidence “KD Web is an award winning internet marketing, web design and creative agency, providing SEO, polished website design, Ecommerce and CMS systems as well as branding and graphic…” Source: RevenueBase Database · checked Sep 21, 2026
14	TRUE	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	38 contacts →
	Partial evidence “True is a B2B specialist creative and media agency based in London with global offices.” Source: RevenueBase Database · checked Sep 21, 2026
15	RVS Media LTD	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Partial evidence “RVS Media is an established creative eCommerce development company based in London.” Source: RevenueBase Database · checked Sep 21, 2026
16	YYT	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	33 contacts →
	Indirect evidence “YYT is a modern eCommerce agency based in London.” Source: RevenueBase Database · checked Sep 21, 2026
17	Velocity Partners	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	32 contacts →
	Partial evidence “B2B marketing has a big pipeline problem.” Source: RevenueBase Database · checked Sep 21, 2026
18	Digiio	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “At digiio we pioneer innovative campaigns, approaches and intelligence that unlock interest and capture the imagination of our client’s customers.” Source: RevenueBase Database · checked Sep 21, 2026
19	Montage	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	27 contacts →
	Partial evidence “Montage is an award-winning creative B2B marketing agency that helps your brand to engage positively with the very people you want buying your products and services.” Source: RevenueBase Database · checked Sep 21, 2026
20	Yellowball	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
21	Chiief	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Chiief is a global B2B marketing and events agency helping FSI, Manufacturinig and Technology brands accelerate revenue, expand market presence, and drive high-value engagement…” Source: RevenueBase Database · checked Sep 21, 2026
22	Wonderful	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Strong evidence “We help B2B service firms turn their websites into consistent sources of high-quality enquiries.” Source: RevenueBase Database · checked Sep 21, 2026
23	VELO	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	24 contacts →
	Partial evidence “Built on recommendations, Velo is a specialist B2B agency that crafts marketing to be proud of for clients targeting a niche in the technology, industrial, and professional…” Source: RevenueBase Database · checked Sep 21, 2026
24	4rdigital	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	23 contacts →
	Partial evidence “4RDigital is a B2B service company, launched with the specific goal of helping our clients and partners create innovative, digital products and services.” Source: RevenueBase Database · checked Sep 21, 2026
25	Media Forty TWO	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Media Forty Two is a specialist B2B consultancy and media buyer.” Source: RevenueBase Database · checked Sep 21, 2026

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: B2B website 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 B2B website development agencies.
Partial evidence: Its own public description names part of B2B website development agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B website 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 25 of 758 B2B website development agencies based in London, United Kingdom

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B2B website development agencies based in London, United Kingdom at a glance

As of Sep 21, 2026

7.2%Verified-email coverage

18.1Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

521

11-50

187

51-200

201-500

501-1,000

1,001-5,000

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 758 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 B2B website 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 London, United Kingdom whose own description of what they do matches “B2B website 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 B2B website 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 B2B website development agencies, 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 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, 980 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 21, 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.

B2B website development agencies by metro in the United Kingdom

B2B website development agencies in London758
B2B website development agencies in Manchester113
B2B website development agencies in Birmingham64
B2B website development agencies in Leeds48
B2B website development agencies in Glasgow47
B2B website development agencies in Bristol46
B2B website development agencies in Nottingham36
B2B website development agencies in Sheffield36
B2B website development agencies in Brighton32
B2B website development agencies in Edinburgh30
B2B website development agencies in Leicester26
B2B website development agencies in Norwich25

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 B2B website 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 B2B website development agencies are there based in London, United Kingdom?

RevenueBase identified 758 B2B website development agencies 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?

Qogita, headquartered in London, tops this list with the largest team on record.

Which city has the most B2B website development agencies?

London leads with 758 headquartered companies, followed by Manchester (113) and Birmingham (64).

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 980 verified decision-maker contacts tracked across these 758 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 21, 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.