Company lists · Data refreshed September 2026

Top 25 Energy sector pr firms based in London, United Kingdom

Name: Energy sector pr firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 167 companies tracked

RevenueBase identified 167 energy sector pr firms headquartered in London, United Kingdom as of September 2026 and tracks 1,114 professional contacts across them, including 429 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers energy sector pr firms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 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 28, 2026 86% judged on-target in blind review

167Companies

1,114Contacts tracked

429Verified emails

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The 25 largest energy sector pr firms based in London, United Kingdom

Ranked by team size

Top 25 of 167 energy sector pr firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy sector pr 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	PLMR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect 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 28, 2026
2	AVA Energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “AVA Energy – Powering Energy Talent.” Source: RevenueBase Database · checked Sep 28, 2026
3	Storm Communications	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
4	The Energy Year	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial evidence “At The Energy Year, we offer deep business intelligence and sharp strategic communications.” Source: RevenueBase Database · checked Sep 28, 2026
5	Rostrum	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “Rostrum is a leading London PR agency.” Source: RevenueBase Database · checked Sep 28, 2026
6	The Communication Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “About The Communication Group plc The Communication Group plc is the longest established independent public relations consultancy in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
7	Spark Communications UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Partial evidence “At Spark, we’ve spent the last 25 years helping ambitious tech and life sciences companies craft PR campaigns, comms strategy and content that don’t just make noise, they make…” Source: RevenueBase Database · checked Sep 28, 2026
8	Etasca	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “The energy transition is gaining momentum but needs to accelerate to meet the challenges posed by the climate emergency.” Source: RevenueBase Database · checked Sep 28, 2026
9	The Outside Organisation	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “We are The Outside Organisation, the UK’s finest Public Relations agency.” Source: RevenueBase Database · checked Sep 28, 2026
10	Seven Consultancy	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “We are a team of experts who are passionate about the brands and organisations we work with.” Source: RevenueBase Database · checked Sep 28, 2026
11	Flame PR	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 28, 2026
12	Chelgate Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Headquartered between Tower Bridge and London Bridge in the heart of London, Chelgate has branch offices in Brussels (for EU Affairs) and Bucharest (for eastern Europe), together…” Source: RevenueBase Database · checked Sep 28, 2026
13	Telosnrg	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	15 contacts →
	Partial evidence “Welcome to Telos, partnering with a broad range of global clients, and their advisers, throughout the oil and gas, renewables, and alternative energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
14	Yellow Jersey PR	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Yellow Jersey PR is a multi-award-winning, London and Zurich-based, communications agency with circa 30 professionals that help clients tell their stories in a clear and…” Source: RevenueBase Database · checked Sep 28, 2026
15	Woburn Partners	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Woburn Partners is a full-service communications agency.” Source: RevenueBase Database · checked Sep 28, 2026
16	Full Circle Communications	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Full Circle brings together a team of skilled insurance PR and communications experts with one clear aim: to enhance and increase the impact of your communication activities on…” Source: RevenueBase Database · checked Sep 28, 2026
17	Movchan Agency	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Market dominance for tech companies.” Source: RevenueBase Database · checked Sep 28, 2026
18	Clementine COM	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	11 contacts →
	Partial evidence “Clementine Com is an award-winning luxury PR & Event agency with a strong expertise in Hospitality, F&B and Luxury brands.” Source: RevenueBase Database · checked Sep 28, 2026
19	Jori White PR	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Whether it’s a parade of 20 classic Ferraris bringing the West End to a standstill, persuading Raymond Blanc to take part in a mass can-can in Covent Garden or inviting Emily…” Source: RevenueBase Database · checked Sep 28, 2026
20	HOUND	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “We love a challenge, the bigger, the better.” Source: RevenueBase Database · checked Sep 28, 2026
21	Aura Financial	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Aura is a trusted adviser to company Boards, senior management and in-house teams.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mattison Public Relations	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Mattison Public Relations is a market-leading public relations consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
23	Holt Energy Advisors	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Strong evidence “HEA is an energy advisory company delivering expert commercial, legal and transaction advisory solutions to the energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
24	SJS Strategic Communications	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “SJS is a boutique public relations agency helping disruptive companies tell impactful stories.” Source: RevenueBase Database · checked Sep 28, 2026
25	Seven Dials PR	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Seven Dials offers consumer brand, lifestyle, luxury, entertainment and events PR, reputation management, C-suite counsel and corporate communications.” Source: RevenueBase Database · checked Sep 28, 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: energy sector pr 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 energy sector pr firms.
Partial evidence: Its own public description names part of energy sector pr firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy sector pr 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 167 energy sector pr firms based in London, United Kingdom

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Energy sector pr firms based in London, United Kingdom at a glance

As of Sep 28, 2026

38.5%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

113

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 167 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 energy sector pr 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 London, United Kingdom whose own description of what they do matches “energy sector pr 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 energy sector pr 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 energy sector pr firms, 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 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, 429 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 28, 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 energy sector pr 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 energy sector pr firms are there based in London, United Kingdom?

RevenueBase identified 167 energy sector pr firms 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?

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

Which city in the United Kingdom has the most energy sector pr firms?

London leads the United Kingdom with 167 headquartered companies, followed by Manchester (12) and Belfast (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 429 verified decision-maker contacts tracked across these 167 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 28, 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.