Company lists · Data refreshed September 2026

Top 25 Public sector consulting firms based in London, United Kingdom

Name: Public sector consulting 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 13, 2026 233 companies tracked

RevenueBase identified 233 public sector consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 1,529 professional contacts across them, including 748 with verified work emails and 76 with mobile numbers. London is the largest hub.

This list covers public sector consulting 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 13, 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 13, 2026 86% judged on-target in blind review

233Companies

1,529Contacts tracked

748Verified emails

76Mobile numbers

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The 25 largest public sector consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 233 public sector consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to public sector consulting 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	Frontier Economics	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	477 contacts →
	Indirect evidence “We help companies with their biggest challenges – market strategies, regulatory reviews, competition inquiries.” Source: RevenueBase Database · checked Sep 13, 2026
2	Cambridge Management Consulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	82 contacts →
	Partial evidence “Cambridge Management Consulting (Cambridge MC) is an international consulting firm that helps companies of all sizes have a better impact on the world.” Source: RevenueBase Database · checked Sep 13, 2026
3	Curzon Consulting	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	59 contacts →
	Indirect evidence “An award-winning management consultancy who deliver tangible and enduring results for our clients.” Source: RevenueBase Database · checked Sep 13, 2026
4	Redquadrant	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	51 contacts →
	Strong evidence “RedQuadrant is an exciting efficiency and transformation consultancy for the public sector.” Source: RevenueBase Database · checked Sep 13, 2026
5	London Economics LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	48 contacts →
	Indirect evidence “London Economics is one of Europe's leading specialist economics and policy consultancies and has its head office in London.” Source: RevenueBase Database · checked Sep 13, 2026
6	Pmsi Strategy	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	45 contacts →
	Partial evidence “PMSI is a management consulting firm specialising in commercial due diligence, market intelligence and strategy consulting.” Source: RevenueBase Database · checked Sep 13, 2026
7	Economic Consulting Associates ECA	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	33 contacts →
	Partial evidence “Economic Consulting Associates was formed in 1997 to provide economic and regulatory consulting services to industry and government.” Source: RevenueBase Database · checked Sep 13, 2026
8	Mutual Ventures	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	32 contacts →
	Partial evidence “At MV we are passionate about better, more sustainable public services.” Source: RevenueBase Database · checked Sep 13, 2026
9	KBM Group	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	26 contacts →
	Partial evidence “KBM Group was founded as a Chartered Certified Accountancy firm, offering advisory and consulting services for business start-ups and organizations looking to strengthen their…” Source: RevenueBase Database · checked Sep 13, 2026
10	Hawkrose Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Indirect evidence “Hawkrose provide wide-ranging consultancy services, covering, for example, financial analysis, legal, strategy and sustainability issues.” Source: RevenueBase Database · checked Sep 13, 2026
11	Plum Consulting	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Strong evidence “Based in London and Paris, we are a leading independent consulting firm, focused on the telecommunications, media, technology, and adjacent sectors.” Source: RevenueBase Database · checked Sep 13, 2026
12	TONIC	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Strong evidence “TONIC was established in 2007 to provide public sector consultancy to a range of Government departments, local authorities, PCCs and 3rd sector organisations.” Source: RevenueBase Database · checked Sep 13, 2026
13	Gbrw Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “Established in 1995, GBRW has a 30-year track record of financial sector expertise in Europe, Asia, Africa and the Middle East.” Source: RevenueBase Database · checked Sep 13, 2026
14	ABS Consulting Group LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
15	Ergo Strategy Group	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Partial evidence “Ergo Strategy Group is a global consulting firm that designs and delivers solutions at the intersection of natural resources and economic development.” Source: RevenueBase Database · checked Sep 13, 2026
16	Newstate Partners LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Indirect evidence “In 2023, Newstate Partners joined Ankura.” Source: RevenueBase Database · checked Sep 13, 2026
17	Siep Global Consulting LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “We are motivated by the opportunity to provide solution to your most difficult problem.” Source: RevenueBase Database · checked Sep 13, 2026
18	The Exec Advisors	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Indirect evidence “At The Exec Advisors, we are a team of seasoned executive advisors and leadership partners dedicated to helping organizations navigate challenges, seize opportunities, and achieve…” Source: RevenueBase Database · checked Sep 13, 2026
19	Belmana LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Indirect evidence “Policy Evaluation \| Data Management \| Cost analysis \| Policy Appraisal Belmana provides robust research and analysis to help our clients make better decisions and use resources…” Source: RevenueBase Database · checked Sep 13, 2026
20	Waterworth Consulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “The only consulting company a future resilient organisation needs.” Source: RevenueBase Database · checked Sep 13, 2026
21	Orbit Support	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “ORBIT SUPPORT LTD is a management consulting company based out of 28 GILDERSOME STREET, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 13, 2026
22	Brennan & Partners	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “Brennan & Partners works across all sectors for clients who are both ethical and leaders in what they do.” Source: RevenueBase Database · checked Sep 13, 2026
23	Capital Counsel	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Indirect evidence “Capital Counsel is a bespoke consultancy providing strategic advice, business and regulatory support, government affairs and communications services.” Source: RevenueBase Database · checked Sep 13, 2026
24	Vectura Advisory	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Strong evidence “Vectura Advisory works across the public transport sector including transport authorities, operators, suppliers, regulators and professional services firms.” Source: RevenueBase Database · checked Sep 13, 2026
25	Summer-Browning Associates LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “We specialise in Commercial and Procurement; Finance, Project and Programme Management; Business Transformation and Change; Corporate Strategy; Talent Management; Bid Management.” Source: RevenueBase Database · checked Sep 13, 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: public sector consulting 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 public sector consulting firms.
Partial evidence: Its own public description names part of public sector consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name public sector consulting 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 233 public sector consulting firms based in London, United Kingdom

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Public sector consulting firms based in London, United Kingdom at a glance

As of Sep 13, 2026

48.9%Verified-email coverage

5.0%Mobile-number coverage

6.6Average contacts per company

1-10Median size (employees)

98.3%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

171

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

6050–30

14031–60

361–90

090–180

0180+

Company record updated

Median 65.0d

00–30

65231–60

62361–90

15890–180

96180+

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 sector consulting 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 “public sector consulting 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 public sector consulting 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 public sector consulting 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, 748 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 13, 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 sector consulting firms by metro in the United Kingdom

Public sector consulting firms in London229

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 sector consulting 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 public sector consulting firms are there based in London, United Kingdom?

RevenueBase identified 233 public sector consulting 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?

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

Which city has the most public sector consulting firms?

London leads with 229 headquartered companies, followed by Manchester (19) and Bristol (15).

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 748 verified decision-maker contacts tracked across these 233 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 13, 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.