Company lists · Data refreshed September 2026

Top 25 B2B public relations agencies based in London, United Kingdom

RevenueBase identified 281 B2B public relations agencies headquartered in London, United Kingdom as of September 2026 and tracks 2,179 professional contacts across them, including 849 with verified work emails and 236 with mobile numbers. London is the largest hub.

This list covers B2B public relations 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
281Companies
2,179Contacts tracked
849Verified emails
236Mobile numbers
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The 25 largest B2B public relations agencies based in London, United Kingdom

Ranked by team size
Top 25 of 281 B2B public relations agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names B2B public relations agencies: 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.
#CompanyHeadquartersEmployeesContacts
1
BBNPartial evidence
London, United Kingdom1,001-5,00085

“THIS IS B2B WITHOUT BORDERS THIS IS BBN BBN breaks boundaries.”

Source: company website · checked Sep 3, 2026
2
Propeller GroupPartial evidence
London, United Kingdom51-20071

“Propeller Group is a global B2B agency with an integrated approach to PR, content, and growth marketing.”

Source: company website · checked Sep 3, 2026
3
Fight OR FlightPartial evidence
London, United Kingdom51-20066

“Today, B2B brands battle for attention in the same crowded space as everything else.”

Source: company website · checked Sep 3, 2026
4London, United Kingdom51-20066

“CCGroup, a Hoffman Agency, is a PR, marketing and industry analyst relations agency helping B2B technology brands stand out in competitive markets.”

Source: company website · checked Sep 3, 2026
5
The Marketing PracticePartial evidence
London, United Kingdom501-1,00052

“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: company website · checked Sep 3, 2026
6
The Think TankIndirect evidence
London, United Kingdom11-5045

“We are The Think Tank: a fully-integrated, result-oriented agency based in Holborn, London.”

Source: company website · checked Sep 3, 2026
7
RoosterIndirect evidence
London, United Kingdom11-5043

“Rooster is a best-in-class integrated PR & communications agency with a focus on innovative storytelling, performance and accountability.”

Source: company website · checked Sep 3, 2026
8
Storm CommunicationsIndirect evidence
London, United Kingdom11-5041

“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: company website · checked Sep 3, 2026
9
RostrumIndirect evidence
London, United Kingdom11-5035

“Rostrum is a leading London PR agency.”

Source: company website · checked Sep 3, 2026
10
GingermayPartial evidence
London, United Kingdom11-5034

“GingerMay is a multi-award-winning global agency for integrated B2B tech communications.”

Source: company website · checked Sep 3, 2026
11London, United Kingdom11-5033

“About The Communication Group plc The Communication Group plc is the longest established independent public relations consultancy in the UK.”

Source: company website · checked Sep 3, 2026
12
Babel B CorpPartial evidence
London, United Kingdom11-5031

“For two decades, Babel has been helping global B2B tech brands tell the stories that matter.”

Source: company website · checked Sep 3, 2026
13
Bubble AgencyIndirect evidence
London, United Kingdom11-5029

“Founded in Bubble is a full-service PR, marketing and events agency that transforms businesses with its knowledge and network.”

Source: company website · checked Sep 3, 2026
14
PR Agency ONEStrong evidence
London, United Kingdom11-5026

“PR Agency One is an award-winning public relations consultancy based in Manchester and London, working across B2B and B2C communications.”

Source: company website · checked Sep 3, 2026
15
MD CommunicationsIndirect evidence
London, United Kingdom11-5026

“MD Communications is a bespoke communications consultancy dedicated to creating, building and protecting individual and corporate brand reputations.”

Source: company website · checked Sep 3, 2026
16
Fieldhouse AssociatesIndirect evidence
London, United Kingdom11-5025

“FieldHouse Associates is the definitive PR agency for the fast-growth tech and private markets ecosystem.”

Source: company website · checked Sep 3, 2026
17
VELOPartial evidence
London, United Kingdom11-5024

“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: company website · checked Sep 3, 2026
18
Bluestripe GroupPartial evidence
London, United Kingdom11-5021

“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: company website · checked Sep 3, 2026
19
The Outside OrganisationStrong evidence
London, United Kingdom11-5021

“We are The Outside Organisation, the UK’s finest Public Relations agency.”

Source: company website · checked Sep 3, 2026
20
Seven ConsultancyIndirect evidence
London, United Kingdom11-5019

“We are a team of experts who are passionate about the brands and organisations we work with.”

Source: company website · checked Sep 3, 2026
21London, United Kingdom51-20019

“Powerscourt (a Sodali & Co company) offers communications counsel to senior management from the informed perspective of front line journalism, combined with extensive business and…”

Source: company website · checked Sep 3, 2026
22
Platform CommunicationsIndirect evidence
London, United Kingdom11-5018

“Propel Your Business Own the narrative, elevate your brand and drive sales success with our complete comms offering based on decades of industry experience.”

Source: company website · checked Sep 3, 2026
23
Flame PRStrong evidence
London, United Kingdom11-5017

“As a leading public relations agency specialising in a number of key sectors, Flame PR has an established track record of delivering results through an impressive list of contacts…”

Source: company website · checked Sep 3, 2026
24
PositivePartial evidence
London, United Kingdom11-5016

“Positive is an award-winning B2B tech PR consultancy offering hard-to-find marketing and PR services for technology businesses in the UK and EMEA.”

Source: company website · checked Sep 3, 2026
25
InvicommPartial evidence
London, United Kingdom11-5015

“We are a B2B brand communications partner supporting companies throughout the lifecycle of their business across a wide range of sectors and geographies.”

Source: company website · checked Sep 3, 2026

Showing 25 of 281 B2B public relations agencies based in London, United Kingdom

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B2B public relations agencies based in London, United Kingdom at a glance

As of Sep 3, 2026
1-10Median size (employees)
LondonLargest hub · 281 HQs
236Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
190
11-50
75
51-200
8
501-1,000
2
1,001-5,000
1

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 public relations agencies, 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 London, United Kingdom whose own description of what they do matches “B2B public relations agencies”. 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 B2B public relations 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 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, 849 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 3, 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 public relations agencies by metro in the United Kingdom

  • B2B public relations agencies in London281

Frequently asked

How many B2B public relations agencies are there based in London, United Kingdom?

RevenueBase identified 281 B2B public relations 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?

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

Which city has the most B2B public relations agencies?

London leads with 281 headquartered companies, followed by Manchester (16) and Bristol (13).

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 849 verified decision-maker contacts tracked across these 281 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 3, 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.