Company lists · Data refreshed September 2026

Top 25 B2B services companies based in the United Kingdom

Name: B2B services companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 553 companies tracked

RevenueBase identified 553 B2B services companies headquartered in the United Kingdom as of September 2026 and tracks 2,869 professional contacts across them, including 521 with verified work emails. London is the largest hub.

This list covers B2B services companies 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, 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

553Companies

2,869Contacts tracked

521Verified emails

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The 25 largest B2B services companies based in the United Kingdom

Ranked by team size

Top 25 of 553 B2B services companies based in the 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 services companies: 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	Publicis PRO	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	139 contacts →
	Strong 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
2	SOLVD	Indirect evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	51-200	74 contacts →
	Indirect evidence “Streamline your business with our bespoke support services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Excalibur Communications	Indirect evidence	Swindon, United KingdomHQ checked Sep 21, 2026	51-200	72 contacts →
	Indirect evidence “Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Source: RevenueBase Database · checked Sep 21, 2026
4	The Marketing Practice	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	51 contacts →
	Strong 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
5	Business Advantage	Strong evidence	Petts Wood, United KingdomHQ checked Sep 21, 2026	11-50	48 contacts →
	Strong evidence “Business Advantage is a B2B research, business development and marketing consulting practice operating in the global IT, Digital and Telecommunications sectors.” Source: RevenueBase Database · checked Sep 21, 2026
6	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
7	Pipeline Professional Services	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	43 contacts →
	Indirect evidence “Pipeline is a collective of sales professionals, united in our passion and drive for commercial success.” Source: RevenueBase Database · checked Sep 21, 2026
8	Purple Demand	Indirect evidence	Hebden Bridge, United KingdomHQ checked Sep 21, 2026	11-50	38 contacts →
	Indirect evidence “We are the people who make meetings happen.” Source: RevenueBase Database · checked Sep 21, 2026
9	Velocity Partners	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	32 contacts →
	Strong evidence “B2B marketing has a big pipeline problem.” Source: RevenueBase Database · checked Sep 21, 2026
10	SME Broker Services	Indirect evidence	Worcester, United KingdomHQ checked Sep 21, 2026	51-200	29 contacts →
	Indirect evidence “A fashionable, contemporary and forward-thinking, brokerage for business essential resources/services, with an ear to the ground and a finger on the pulse.” Source: RevenueBase Database · checked Sep 21, 2026
11	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
12	The Lead Generation Company	Strong evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Strong evidence “Generating high-quality B2B sales leads for your business!” Source: RevenueBase Database · checked Sep 21, 2026
13	SNT Group	Indirect evidence	Leeds, United KingdomHQ checked Sep 21, 2026	51-200	26 contacts →
	Indirect evidence “SNT Group is a service led business, providing our clients with best of breed technologies and services.” Source: RevenueBase Database · checked Sep 21, 2026
14	AIM LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	24 contacts →
	Indirect evidence “Aim Ltd is a UK based International business to business service provider delivering a fusion of business services and technology solutions to organisations through our…” Source: RevenueBase Database · checked Sep 21, 2026
15	GCL	Indirect evidence	United KingdomHQ checked Sep 21, 2026	51-200	24 contacts →
	Indirect evidence “GCL, with its unique, non-scripted approach to telemarketing and related marketing services, has for over 30 years established an enviable reputation for providing winning lead…” Source: RevenueBase Database · checked Sep 21, 2026
16	4rdigital	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	23 contacts →
	Strong 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
17	Media Forty TWO	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Strong evidence “Media Forty Two is a specialist B2B consultancy and media buyer.” Source: RevenueBase Database · checked Sep 21, 2026
18	TOP Resource Group	Indirect evidence	Preston, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Top Resource Group is your one-stop ally for all business outsourcing needs.” Source: RevenueBase Database · checked Sep 21, 2026
19	Bluestripe Group	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Strong evidence “Founded in 2017 by three TMT industry veterans, Bluestripe Group is a pioneering B2B marketing services business made up of three units which offer integrated PR, content and…” Source: RevenueBase Database · checked Sep 21, 2026
20	ECI Evolutionx	Indirect evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “EvolutionX can help you create a top-notch online shopping experience.” Source: RevenueBase Database · checked Sep 21, 2026
21	Kingpin Communications	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	16 contacts →
	Strong evidence “Kingpin is now part of The Marketing Practice The Marketing Practice has combined the best B2B specialists from across the globe in one business, with capabilities that stretch…” Source: RevenueBase Database · checked Sep 21, 2026
22	Withall & CO LTD	Indirect evidence	West Wickham, United KingdomHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “When you engage us to act as your outsourced finance team, we not only provide financial and business support, but in conjunction with our wider community of legal experts and tax…” Source: RevenueBase Database · checked Sep 21, 2026
23	Digital Clarity	Indirect evidence	Surrey, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Why do some companies succeed and others go around in circles?” Source: RevenueBase Database · checked Sep 21, 2026
24	Acumen	Indirect evidence	Northampton, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Through intelligent techniques and a fresh approach, Acumen Marketing Services Ltd offers high profile business development strategies and marketing services to help you grow your…” Source: RevenueBase Database · checked Sep 21, 2026
25	Proconnect	Strong evidence	Warwick, United KingdomHQ checked Sep 21, 2026	11-50	11 contacts →
	Strong evidence “Brought to you by the team who created b2b.store, ProConenct is the AI-powered customer engagement platform built for wholesale growth.” 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 services companies. 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 services companies.
Partial evidence: Its own public description names part of B2B services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B services companies. 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 553 B2B services companies based in the United Kingdom

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B2B services companies based in the United Kingdom at a glance

As of Sep 21, 2026

18.2%Verified-email coverage

5.2Average contacts per company

1-10Median size (employees)

31.3%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

429

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 553 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 services companies, 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 the United Kingdom whose own description of what they do matches “B2B services companies”. 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 services companies), 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 services companies, 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 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, 521 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 services companies by metro

B2B services companies in London173

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 services companies, 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 services companies are there based in the United Kingdom?

RevenueBase identified 553 B2B services companies 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?

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

Which city has the most B2B services companies?

London leads with 173 headquartered companies, followed by Manchester (13) and Edinburgh (11).

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 521 verified decision-maker contacts tracked across these 553 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.