Company lists · Data refreshed September 2026

Top 25 Enterprise pr agencies based in the United Kingdom

RevenueBase identified 1,802 enterprise pr agencies headquartered in the United Kingdom as of September 2026 and tracks 17,571 professional contacts across them, including 7,201 with verified work emails. London is the largest hub.

This list covers enterprise pr agencies 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
1,802Companies
17,571Contacts tracked
7,201Verified emails
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The 25 largest enterprise pr agencies based in the United Kingdom

Ranked by team size
Top 25 of 1,802 enterprise pr agencies 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 enterprise pr 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200449 contacts →

Indirect evidence

“Purple is independent in philosophy, attitude and operation –offering a boutique in-house approach, the strategic requirements of each client are individually tailored from the…”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceAldgate, United KingdomHQ checked Sep 21, 2026201-500415 contacts →

Indirect evidence

“Emperor is one of the UK's leading employee-owned creative communications agencies.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceEast Sussex, United KingdomHQ checked Sep 21, 2026n/a367 contacts →

Partial evidence

“HSL is a hard-working and creative PR and marketing communications agency.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200272 contacts →

Indirect evidence

“Creative communications for entertainment, arts and culture.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceLondon, United KingdomHQ checked Sep 21, 2026201-500229 contacts →

Indirect evidence

“Portland is a consultancy specialising in public affairs, corporate affairs and geopolitics.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200224 contacts →

Indirect evidence

“We’re an award-winning, founder-led, communications agency based in London, Minneapolis, New York and San Francisco with an extensive global capability.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200213 contacts →

Indirect evidence

“Axicom is the Burson agency for tech brands & brands with a tech story.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-200213 contacts →

Partial evidence

“Harvard is an award-winning integrated Marketing and PR agency for tech brands big and small, with a full-service offering including: media and analyst relations, marketing…”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200190 contacts →

Indirect evidence

“CDR is a leading global strategic communications consultancy.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceLondon, United KingdomHQ checked Sep 21, 2026201-500187 contacts →

Partial evidence

“We’re bored of boring PR.”

Source: RevenueBase Database · checked Sep 21, 2026
11Partial evidenceLondon, United KingdomHQ checked Sep 21, 2026201-500177 contacts →

Partial evidence

“Hanover is an award-winning communications consultancy that advises enterprises, institutions, and individuals on rewiring their strategies for long-term success.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200176 contacts →

Indirect evidence

“Helping organisations build and protect value in complex and contested environments.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200174 contacts →

Indirect evidence

“Milltown Partners is a global advisory firm working with influential organisations and individuals on the communications and public policy challenges that define their reputations.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,000142 contacts →

Indirect evidence

“Strategic corporate affairs in the UK and around the globe.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202611-50139 contacts →

Indirect evidence

“A communication agency specialising in advertising, public relations, and digital media, Artbees' art studio has been in existence since 2006.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceManchester, United KingdomHQ checked Sep 21, 202651-200133 contacts →

Indirect 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
17Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200131 contacts →

Indirect evidence

“Cognito is the global communications agency for finance, technology and the climate transition.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceMarlow, United KingdomHQ checked Sep 21, 202651-200130 contacts →

Indirect evidence

“We deliver marketing that drives real business impact in our core sectors; retail destinations, leisure & attractions, and wines & spirits.”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceManchester, United KingdomHQ checked Sep 21, 202651-200130 contacts →

Partial evidence

“Tangerine is a fiercely independent PR and Social agency.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200125 contacts →

Indirect evidence

“Hanbury is a strategic advisory firm that turns insight into impact.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200121 contacts →

Indirect evidence

“At Red Consultancy, we help brands take on tomorrow – with clarity, creativity, and the confidence to lead.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200111 contacts →

Indirect evidence

“Camargue is an award-winning, employee-owned communications agency.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceBristol, United KingdomHQ checked Sep 21, 202611-50101 contacts →

Indirect 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
24Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202611-5089 contacts →

Indirect evidence

“Connect is a communications agency specialising in public affairs and political strategy, corporate communications and reputation management.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202611-5083 contacts →

Indirect evidence

“Halpern is an agency powerhouse.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 1,802 enterprise pr agencies based in the United Kingdom

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Enterprise pr agencies based in the United Kingdom at a glance

As of Sep 21, 2026
41.0%Verified-email coverage
9.8Average contacts per company
1-10Median size (employees)
44.6%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
1,313
11-50
400
51-200
61
201-500
12
501-1,000
2
1,001-5,000
4

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 1,802 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 enterprise pr 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 the United Kingdom whose own description of what they do matches “enterprise pr 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 enterprise pr 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 enterprise pr agencies, 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, 7,201 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.

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 enterprise pr 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 enterprise pr agencies are there based in the United Kingdom?

RevenueBase identified 1,802 enterprise pr agencies 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?

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

Which city has the most enterprise pr agencies?

London leads with 803 headquartered companies, followed by Manchester (44) and Leeds (26).

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 7,201 verified decision-maker contacts tracked across these 1,802 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.