Company lists · Data refreshed September 2026

Top 25 Ifrs consulting firms based in London, United Kingdom

Name: Ifrs 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 28, 2026 166 companies tracked

RevenueBase identified 166 ifrs consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 393,189 professional contacts across them, including 144,272 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers ifrs 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 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

166Companies

393,189Contacts tracked

144,272Verified emails

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The 25 largest ifrs consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 166 ifrs consulting 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 ifrs 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	EY	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	375,085 contacts →
	Indirect evidence “EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.” Source: RevenueBase Database · checked Sep 28, 2026
2	BDO UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	6,933 contacts →
	Partial evidence “BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Source: RevenueBase Database · checked Sep 28, 2026
3	RSM	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	3,630 contacts →
	Partial evidence “RSM is a leading global network of assurance, tax and consulting firms focused on the middle-market.” Source: RevenueBase Database · checked Sep 28, 2026
4	Crowe UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,395 contacts →
	Partial evidence “Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Source: RevenueBase Database · checked Sep 28, 2026
5	Moore Kingston Smith	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	1,151 contacts →
	Indirect evidence “At Moore Kingston Smith, we believe in the potential of people to make a positive impact, fuelled by the power of genuine understanding.” Source: RevenueBase Database · checked Sep 28, 2026
6	PKF Global	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	725 contacts →
	Indirect evidence “PKF is a global family of legally independent professional services firms bound together by a shared commitment to quality, integrity and the creation of clarity in a complex…” Source: RevenueBase Database · checked Sep 28, 2026
7	PKF Littlejohn	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	702 contacts →
	Indirect evidence “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Source: RevenueBase Database · checked Sep 28, 2026
8	NEXIA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	685 contacts →
	Partial evidence “Nexia is a leading worldwide network of independent accounting and consulting firms.” Source: RevenueBase Database · checked Sep 28, 2026
9	Kreston Global	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	512 contacts →
	Indirect evidence “Kreston is a global network of innovative, like-minded accounting firms that puts trusted relationships and exceptional care at the heart of everything it does.” Source: RevenueBase Database · checked Sep 28, 2026
10	Mazars In The UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	505 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
11	Russell Bedford International	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	271 contacts →
	Indirect evidence “Established in 1983, Russell Bedford is a global network of independent firms of accountants, auditors, tax advisers and business consultants.” Source: RevenueBase Database · checked Sep 28, 2026
12	Lubbock Fine	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	203 contacts →
	Indirect evidence “Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.” Source: RevenueBase Database · checked Sep 28, 2026
13	Harris & Trotter LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	116 contacts →
	Indirect evidence “At Harris & Trotter, we believe your accountant should do a lot more than just report on how your business is doing – he or she should help you identify opportunities to improve…” Source: RevenueBase Database · checked Sep 28, 2026
14	Fusion Consulting Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	62 contacts →
	Partial evidence “Fusion is a multi-disciplinary consulting firm that offers 360 degree advisory services and end-to-end solutions for private individuals and fast growth businesses.” Source: RevenueBase Database · checked Sep 28, 2026
15	Integra International LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	38 contacts →
	Indirect evidence “Integra International® is a global alliance of independent CPAs, CAs, Legal and Business Advisory firms that drive smart growth of their businesses by sharing knowledge and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Iapa International	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	30 contacts →
	Indirect evidence “IAPA is a global association of independent accountancy, legal and business advisory firms who provide accounting, audit, tax advisory, legal and business consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026
17	Tax&advise	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “We are accountants and business consultants who speak the language of our clients.” Source: RevenueBase Database · checked Sep 28, 2026
18	KBM Group	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
19	Pathlight Associates	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “What we do We are a specialist professional services firm providing consulting and assurance services, particularly to the Financial Services sector.” Source: RevenueBase Database · checked Sep 28, 2026
20	Knav UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	21 contacts →
	Partial evidence “KNAV is a dynamic global accounting and consulting firm, offering a comprehensive range of services including accounting, assurance, taxation, international transfer pricing…” Source: RevenueBase Database · checked Sep 28, 2026
21	Mirador Solutions Consultancy	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Trusted Partner to the Financial Services From the business, to your business Mirador Solutions Consultancy is a trusted and strategic partner for financial services firms, with…” Source: RevenueBase Database · checked Sep 28, 2026
22	Accounting Crunchers Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Accounting Crunchers Limited is a full-service business consulting and advisory firm with a global presence in the UAE, UK, Canada, and USA.” Source: RevenueBase Database · checked Sep 28, 2026
23	Prager Metis UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	12 contacts →
	Indirect evidence “Prager Metis provides a full range of accounting, audit, tax, advisory and international services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Moore Doeren Mayhew	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	12 contacts →
	Indirect evidence “Moore Doeren Mayhew is a CPA and advisory firm with extensive experience in international taxation, including in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
25	Michaelides Warner Accountants And Business Advisors	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Based in Hammersmith, West London, Michaelides Warner provides the full range of compliance and advisory services; including accounts, personal and corporate tax, payroll, book…” 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: ifrs 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 ifrs consulting firms.
Partial evidence: Its own public description names part of ifrs consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ifrs 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 166 ifrs consulting firms based in London, United Kingdom

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Ifrs consulting firms based in London, United Kingdom at a glance

As of Sep 28, 2026

36.7%Verified-email coverage

2368.6Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 166 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 ifrs 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 “ifrs 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 ifrs 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 ifrs 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, 144,272 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 ifrs 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 ifrs consulting firms are there based in London, United Kingdom?

RevenueBase identified 166 ifrs 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?

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

Which city in the United Kingdom has the most ifrs consulting firms?

London leads the United Kingdom with 166 headquartered companies, followed by Manchester (11) and Birmingham (10).

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 144,272 verified decision-maker contacts tracked across these 166 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.