Company lists · Data verified August 2026

Top 25 Accounting firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,585 companies tracked

There are 1,585 accounting firms headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 50,851 professional contacts across them, including 12,988 with verified work emails and 2,039 with mobile numbers. London is the largest hub.

This list covers accounting 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. Data current as of August 28, 2026.

1,585Companies

50,851Contacts tracked

12,988Verified emails

2,039Mobile numbers

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The 25 largest accounting firms based in London, United Kingdom

Ranked by team size

Top 25 of 1,585 accounting firms based in London, United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Kpmg UK	London	10001+	14,427	808
2	PWC UK	London	10001+	11,074	3,838
3	Xeinadin	London	1,001-5,000	993	670
4	PKF Global	London	10001+	727	66
5	PKF Littlejohn	London	501-1,000	710	419
6	Blick Rothenberg	London	501-1,000	698	483
7	NEXIA	London	10001+	669	11
8	Haysmac	London	501-1,000	660	322
9	Mazars In The UK	London	1,001-5,000	516	231
10	Kreston Global	London	10001+	504	10
11	Outbooks	London	201-500	475	39
12	Gravita	London	201-500	376	287
13	Affinia	London	201-500	370	198
14	HW Fisher, Part Of The Sumer Group	London	201-500	340	206
15	SKS Business Services	London	501-1,000	321	217
16	HLB International	London	10001+	287	26
17	Mercer & Hole	London	201-500	283	190
18	Russell Bedford International	London	1,001-5,000	262	9
19	Aims Accountants For Business	London	201-500	234	152
20	SRLV	London	201-500	223	163
21	Carpenter Box, Part Of The Sumer Group	London	201-500	195	144
22	Sopher CO	London	201-500	185	102
23	EY Private Client Services	London	10001+	179	68
24	Beever And Struthers	London	201-500	152	68
25	Parker Russell	London	1,001-5,000	96	1

Showing 25 of 1,585 accounting firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,988 reachable decision-makers.

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Accounting firms based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 1585 HQs

2,039Contacts with mobile numbers

120Emails re-verified in last 30 days

Companies by employee count

1-10

1,003

11-50

379

51-200

201-500

501-1,000

1,001-5,000

10001+

Accounting firms by metro in the United Kingdom

Metro	Companies
Accounting firms in London	1585
Accounting firms in Manchester	172
Accounting firms in Birmingham	149
Accounting firms in Bristol	105
Accounting firms in Glasgow	82
Accounting firms in Leeds	79
Accounting firms in Liverpool	72

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “accounting firms”, with match quality audited by blind human judging, and headquartered in London, United Kingdom.
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: Contact records re-verify on a rolling cadence; 120 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting firms are there based in London, United Kingdom?

There are 1,585 accounting firms headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most accounting firms?

London leads with 1585 headquartered companies, followed by Manchester (172) and Birmingham (149).

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 12,988 verified decision-maker contacts tracked across these 1,585 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.