Company lists · Data refreshed September 2026
Top 25 Public relations agencies technology companies based in the United Kingdom
RevenueBase identified 1,461 public relations agencies technology companies headquartered in the United Kingdom as of September 2026 and tracks 11,597 professional contacts across them, including 4,434 with verified work emails. London is the largest hub.
This list covers public relations agencies technology 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 29, 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.
The 25 largest public relations agencies technology companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 367 contacts → | ||||
Indirect evidence “HSL is a hard-working and creative PR and marketing communications agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 272 contacts → | ||||
Indirect evidence “Creative communications for entertainment, arts and culture.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 224 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 213 contacts → | ||||
Indirect evidence “Axicom is the Burson agency for tech brands & brands with a tech story.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 213 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 187 contacts → | ||||
Indirect evidence “We’re bored of boring PR.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 133 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 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 131 contacts → | ||||
Partial evidence “Cognito is the global communications agency for finance, technology and the climate transition.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 130 contacts → | ||||
Indirect evidence “Tangerine is a fiercely independent PR and Social agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 101 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 95 contacts → | ||||
Indirect evidence “Fox Agency is an integrated agency for global B2B tech brands on a mission: To grow, expand, transform, accelerate, go-to-market, get investment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 78 contacts → | ||||
Partial evidence “PLMR delivers Communications with Impact Lobbying and Public Affairs We draw on the experience of former MPs, candidates and advisers, local authority councillors and public…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 71 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 69 contacts → | ||||
Partial evidence “The Bespoke Group is the umbrella organisation comprising two market leading international PR and marketing agencies serving a range of B2B and B2C technology markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 67 contacts → | ||||
Partial evidence “CCGroup is part of The Hoffman Agency, serving as its specialist UK B2B technology communications consultancy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 66 contacts → | ||||
Indirect evidence “We are now Golin Ketchum London.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 65 contacts → | ||||
Indirect evidence “The organisations we work with want to make the world a better place to live in, work in and experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 57 contacts → | ||||
Indirect evidence “Hatch specialises in consumer and business to business PR, social, sponsorship maximisation and event delivery, and prides itself on results, not just in column inches and media…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 57 contacts → | ||||
Indirect evidence “Tavistock is a leading strategic communications consultancy specialising in the corporate, financial and reputation management sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 55 contacts → | ||||
Indirect evidence “For more than four decades, we have helped our clients build, protect, and enhance their reputations, advance their business objectives, and shape the conversations that matter…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 54 contacts → | ||||
Indirect evidence “Tyto is the only PR and communications agency built to scale high-growth tech companies faster across Europe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 54 contacts → | ||||
Partial evidence “International, award-winning PR agency with 110+ staff operating in the USA, Europe, and APAC and ANZ serving innovative and high-growth global B2B and enterprise technology…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 54 contacts → | ||||
Indirect evidence “We are the strategic acumen of ‘Gen Plus Group’, a dynamic communications agency where strategy meets storytelling.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 53 contacts → | ||||
Indirect evidence “Eulogy is an independent creative comms agency, designed to drive brand growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 52 contacts → | ||||
Indirect evidence “Purplex is an award winning PR, digital marketing and creative agency with clients in the UK and across the globe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: public relations agencies technology 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 public relations agencies technology companies.
- Partial evidence
- Its own public description names part of public relations agencies technology companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name public relations agencies technology 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 1,461 public relations agencies technology companies based in the United Kingdom
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Public relations agencies technology companies based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 1,461 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 public relations agencies technology 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 “public relations agencies technology 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 public relations agencies technology 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 public relations agencies technology 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, 4,434 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 29, 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.
Public relations agencies technology companies by metro
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 public relations agencies technology 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 public relations agencies technology companies are there based in the United Kingdom?
RevenueBase identified 1,461 public relations agencies technology 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?
HSL, headquartered in United Kingdom, tops this list with the largest team on record.
Which city has the most public relations agencies technology companies?
London leads with 606 headquartered companies, followed by Manchester (45) and Leeds (22).
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 4,434 verified decision-maker contacts tracked across these 1,461 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 29, 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.
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