Company lists · Data refreshed September 2026

Top 25 Communications firms based in the United Kingdom

Name: Communications 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 21, 2026 576 companies tracked

RevenueBase identified 576 communications firms headquartered in the United Kingdom as of September 2026 and tracks 4,080 professional contacts across them, including 1,268 with verified work emails. London is the largest hub.

This list covers communications 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, 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

576Companies

4,080Contacts tracked

1,268Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest communications firms based in the United Kingdom

Ranked by team size

Top 25 of 576 communications firms 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 communications firms: 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	Citypress	Strong evidence	Manchester, United KingdomHQ checked Sep 21, 2026	51-200	133 contacts →
	Strong evidence “Citypress is one of the UK’s leading communications agencies and we’re proud to represent some of the country’s biggest and best-loved brands.” Source: RevenueBase Database · checked Sep 21, 2026
2	Camargue	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	111 contacts →
	Strong evidence “Camargue is an award-winning, employee-owned communications agency.” Source: RevenueBase Database · checked Sep 21, 2026
3	JBP	Strong evidence	Bristol, United KingdomHQ checked Sep 21, 2026	11-50	101 contacts →
	Strong evidence “We're JBP, an award-winning full-service communications agency with our headquarters in Bristol, and offices in London, Warwick, Manchester and Cardiff.” Source: RevenueBase Database · checked Sep 21, 2026
4	Different PR	Indirect evidence	Harrogate, United KingdomHQ checked Sep 21, 2026	n/a	71 contacts →
	Indirect evidence “We are a Yorkshire PR company that specialises in getting our clients and their products in the news via public relations and media relations campaigns, stunts and one off news…” Source: RevenueBase Database · checked Sep 21, 2026
5	Kcom Wholesale	Indirect evidence	Hull, United KingdomHQ checked Sep 21, 2026	501-1,000	61 contacts →
	Indirect evidence “KCOM has been a driver of innovation in the telecoms industry for more than a century; pushing the boundaries and pioneering new technology from our earliest days as a local phone…” Source: RevenueBase Database · checked Sep 21, 2026
6	Radiocoms Systems LTD	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	57 contacts →
	Strong evidence “Radiocoms Systems Limited is a mature communications company of some 50 years and is now the UK’s leading independent communications supplier specialising in the design…” Source: RevenueBase Database · checked Sep 21, 2026
7	Prm-Global	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	54 contacts →
	Strong evidence “We are the strategic acumen of ‘Gen Plus Group’, a dynamic communications agency where strategy meets storytelling.” Source: RevenueBase Database · checked Sep 21, 2026
8	Eulogy	Indirect evidence	Bloomsbury, United KingdomHQ checked Sep 21, 2026	11-50	53 contacts →
	Indirect evidence “Eulogy is an independent creative comms agency, designed to drive brand growth.” Source: RevenueBase Database · checked Sep 21, 2026
9	B3 Communications	Strong evidence	Manchester, United KingdomHQ checked Sep 21, 2026	11-50	48 contacts →
	Strong evidence “Customer-focused telecommunications company dedicated to building trust through transparent communication, reliable services, and unwavering commitment.” Source: RevenueBase Database · checked Sep 21, 2026
10	Mercieca	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence “We’re Mercieca.” Source: RevenueBase Database · checked Sep 21, 2026
11	Storm Communications	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence “Drop us a line at hello@stormcom.co.uk to sign up to our Consumer Brands or Corporate newsletter** Storm is a hardworking, down-to-earth, friendly and results-driven agency.” Source: RevenueBase Database · checked Sep 21, 2026
12	Morrow Communications	Strong evidence	Holywood, United KingdomHQ checked Sep 21, 2026	11-50	40 contacts →
	Strong evidence “Celebrating 40 years of continued growth and innovation Morrows is one of the most experienced team-based integrated communications consultancies on the island of Ireland.” Source: RevenueBase Database · checked Sep 21, 2026
13	Media House	Strong evidence	Angel, United KingdomHQ checked Sep 21, 2026	n/a	38 contacts →
	Strong evidence “Award-Winning Communications Specialists PR \| Marketing \| Events \| Digital \| Talent hello@mediahouseglobal.com” Source: RevenueBase Database · checked Sep 21, 2026
14	ASG	Indirect evidence	Belfast, United KingdomHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “ASG is built to respond to everyday business problems faced by our clients.” Source: RevenueBase Database · checked Sep 21, 2026
15	Cherry & White	Indirect evidence	Quedgeley, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Founded in 1990, Cherry & White has worked with core telecommunication providers for over 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
16	Signal Telecom	Strong evidence	Catterick Garrison, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Strong evidence “Signal Telecom is one of the longest established family run communication companies in the North of England, dedicated to providing businesses with the complete package of…” Source: RevenueBase Database · checked Sep 21, 2026
17	Wildwood Plus	Strong evidence	Faygate, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Strong evidence “We began life in 1994, with the ambition to create a communications business that valued imagination, quality and people.” Source: RevenueBase Database · checked Sep 21, 2026
18	Garnett Keeler Public Relations Limited	Indirect evidence	Carshalton, United KingdomHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “Perhaps the most distinctive thing ‘about us’ as a PR agency, is that we are never ‘about us’.” Source: RevenueBase Database · checked Sep 21, 2026
19	Little RED Rooster B Corp	Strong evidence	Reading, United KingdomHQ checked Sep 21, 2026	11-50	25 contacts →
	Strong evidence “Little Red Rooster \| B Corp™ is a PR and digital communications agency (founded 2011 by Victoria Ruffy) specialising in Audio, Design, Fashion, Home, Music and Tech.” Source: RevenueBase Database · checked Sep 21, 2026
20	Best 4 Business Communications LTD	Strong evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	11-50	24 contacts →
	Strong evidence “Best 4 Business Communications is a company established on the trust and reliability expected by our customers.” Source: RevenueBase Database · checked Sep 21, 2026
21	ASH Communications	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	24 contacts →
	Strong evidence “Ash Communications is an award-winning PR, marketing and communications company.” Source: RevenueBase Database · checked Sep 21, 2026
22	White Label Creative	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “We love challenging how people think – changing perceptions of businesses, communities and even whole towns.” Source: RevenueBase Database · checked Sep 21, 2026
23	WCS Agency	Strong evidence	Cardiff, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Strong evidence “Cardiff's premier marketing agency specialising in Marketing, Public Relations, Media and Communications.” Source: RevenueBase Database · checked Sep 21, 2026
24	SCG South West	Strong evidence	Stonehouse, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Strong evidence “SCG South West is a division of the Southern Communications Group.” Source: RevenueBase Database · checked Sep 21, 2026
25	3x1	Strong evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Strong evidence “3x1 Group is one of the UK's top independent communications consultancies.” 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: communications firms. 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 communications firms.
Partial evidence: Its own public description names part of communications firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name communications firms. 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 576 communications firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,268 reachable decision-makers.

Free signup · no credit card

View the full list →

Communications firms based in the United Kingdom at a glance

As of Sep 21, 2026

31.1%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

25.2%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

415

11-50

138

51-200

201-500

501-1,000

1,001-5,000

10001+

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 576 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 communications firms, 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 “communications firms”. 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 communications firms), 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 communications 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 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, 1,268 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.

Communications firms by metro

Communications firms in London145

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 communications firms, 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 communications firms are there based in the United Kingdom?

RevenueBase identified 576 communications 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?

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

Which city has the most communications firms?

London leads with 145 headquartered companies, followed by Manchester (14) and Bristol (12).

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 1,268 verified decision-maker contacts tracked across these 576 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.

Ready to reach these companies? Verified emails and direct dials for all 576 communications firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Communications firms by geography

Browse the directory

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.