Company lists · Data refreshed September 2026

Top 25 Bookkeeping firms based in the United Kingdom

Name: Bookkeeping firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,675 companies tracked

RevenueBase identified 4,675 bookkeeping firms headquartered in the United Kingdom as of September 2026 and tracks 22,376 professional contacts across them, including 5,942 with verified work emails. London is the largest hub.

This list covers bookkeeping firms 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 19, 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 19, 2026 86% judged on-target in blind review

4,675Companies

22,376Contacts tracked

5,942Verified emails

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The 25 largest bookkeeping firms based in the United Kingdom

Ranked by team size

Top 25 of 4,675 bookkeeping firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to bookkeeping 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	Taxassist Accountants	Strong evidence	Norwich, United KingdomHQ checked Sep 19, 2026	201-500	708 contacts →
	Strong evidence “At TaxAssist Accountants we specialise in providing accountancy services, tax returns, payroll, bookkeeping, tax savings and tax advice to small businesses and support over…” Source: RevenueBase Database · checked Sep 19, 2026
2	Outbooks	Strong evidence	Harrow, United KingdomHQ checked Sep 19, 2026	201-500	477 contacts →
	Strong evidence “Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Source: RevenueBase Database · checked Sep 19, 2026
3	Corient Business Solutions Limited	Strong evidence	Coventry, United KingdomHQ checked Sep 19, 2026	501-1,000	423 contacts →
	Strong evidence “Corient is a specialist outsourced accounting and bookkeeping partner, built exclusively for UK accountancy practices.” Source: RevenueBase Database · checked Sep 19, 2026
4	Looking For NEW Opportunities	Indirect evidence	Stapleford, United KingdomHQ checked Sep 19, 2026	n/a	296 contacts →
	Indirect evidence “Accounting services for sole traders and SME’s.” Source: RevenueBase Database · checked Sep 19, 2026
5	Burgess Hodgson	Indirect evidence	Canterbury, United KingdomHQ checked Sep 19, 2026	51-200	140 contacts →
	Indirect evidence “Burgess Hodgson are a Kent based accountancy firm with the skills and expertise to rival any other accountancy firm in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
6	Accounts And Legal	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	133 contacts →
	Indirect evidence “Traditional accountants do a great job of the numbers, but that's often as far as the service goes.” Source: RevenueBase Database · checked Sep 19, 2026
7	FLB Accountants LLP	Indirect evidence	Wokingham, United KingdomHQ checked Sep 19, 2026	51-200	107 contacts →
	Indirect evidence “FLB is a firm of accountants providing core accounting services to a range of clients from start-ups, owner-managed businesses and private clients, to large corporates and…” Source: RevenueBase Database · checked Sep 19, 2026
8	Debitam	Strong evidence	42-44 Bishopsgate, United KingdomHQ checked Sep 19, 2026	51-200	104 contacts →
	Strong evidence “Online Accounting Service \| Bookkeeping \| Payroll \| Personal Tax Return Filing to HMRC \| Corporation Tax Filing \| HMRC ONLINE FILING: Our aim is to help small business owners` tax…” Source: RevenueBase Database · checked Sep 19, 2026
9	SJD Accountancy	Indirect evidence	Hemel Hempstead, United KingdomHQ checked Sep 19, 2026	501-1,000	102 contacts →
	Indirect evidence “SJD is now Caroola Accountancy!” Source: RevenueBase Database · checked Sep 19, 2026
10	Rayner Essex LLP	Indirect evidence	St Albans, United KingdomHQ checked Sep 19, 2026	51-200	98 contacts →
	Indirect evidence “At Rayner Essex, 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 your…” Source: RevenueBase Database · checked Sep 19, 2026
11	WEM & CO Chartered Accountants	Indirect evidence	East Acton, United KingdomHQ checked Sep 19, 2026	11-50	72 contacts →
	Indirect evidence “Welcome to Wem & Co Are you looking for an innovative firm of chartered accountants and business development specialists who can help you improve the performance and profitability…” Source: RevenueBase Database · checked Sep 19, 2026
12	Affinity Associates Limited	Indirect evidence	Wembley, United KingdomHQ checked Sep 19, 2026	201-500	64 contacts →
	Indirect evidence “Affinity Associates Limited is a leading accounting firm based in Wembley, London, UK, and is regulated and authorised for public practice by both the ICAEW (Institute of…” Source: RevenueBase Database · checked Sep 19, 2026
13	The Accountancy Partnership	Indirect evidence	Wirral, United KingdomHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “We offer online accounting services which simplify tax and finances for small businesses, by providing a fresh alternative to old-school high street accountants.” Source: RevenueBase Database · checked Sep 19, 2026
14	Morris Crocker Chartered Accountants	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “If you’re looking for clear, practical financial advice tailored to your needs, you’re in the right place.” Source: RevenueBase Database · checked Sep 19, 2026
15	Cashroom	Indirect evidence	Livingston, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “Legal Cashiering Services Payroll Services Management Accounting Statutory Accounts Credit Control Consultancy Projects The Cashroom understands that you just want to get on with…” Source: RevenueBase Database · checked Sep 19, 2026
16	Dafferns Accountants	Indirect evidence	Coventry, United KingdomHQ checked Sep 19, 2026	11-50	55 contacts →
	Indirect evidence “Dafferns is a friendly, dynamic firm of accountants.” Source: RevenueBase Database · checked Sep 19, 2026
17	DSL Accounting	Indirect evidence	Leamington Spa, United KingdomHQ checked Sep 19, 2026	n/a	54 contacts →
	Indirect evidence “DSL is one of the UK's leading small business accountancy firms, helping businesses grow since 1997.” Source: RevenueBase Database · checked Sep 19, 2026
18	DRE & CO Chartered Accountants	Indirect evidence	Oswestry, United KingdomHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “We are a firm of Chartered Accountants dedicated to providing our clients with a professional, solution to their day to day accounting needs.” Source: RevenueBase Database · checked Sep 19, 2026
19	Artifin Accountants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “At Artifin Accountants we strive to provide a more open experience of accounting services for business owners.” Source: RevenueBase Database · checked Sep 19, 2026
20	Johnsons Chartered Accountants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	52 contacts →
	Indirect evidence “Now part of acumon UK the UK arm of acumon a fiercely independent global audit, accounting and tax firm.” Source: RevenueBase Database · checked Sep 19, 2026
21	AD Valorem Group	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 19, 2026	51-200	51 contacts →
	Indirect evidence “What Keeps You Awake At Night?” Source: RevenueBase Database · checked Sep 19, 2026
22	Adroit Accountax LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “Empowering Businesses to Thrive Through Financial Clarity \| Adroit Accountax We're a team of passionate and experienced accountants dedicated to your business success.” Source: RevenueBase Database · checked Sep 19, 2026
23	Accountax Consultants UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “ACCOUNTAX.” Source: RevenueBase Database · checked Sep 19, 2026
24	Assets Accounting LTD	Indirect evidence	Reading, United KingdomHQ checked Sep 19, 2026	11-50	48 contacts →
	Indirect evidence “We help reduce your stress and deal with all your company accounts and advice We handle all your payroll requirements We deal with your tax returns and pension requirements You…” Source: RevenueBase Database · checked Sep 19, 2026
25	Accotax	Indirect evidence	Morden, United KingdomHQ checked Sep 19, 2026	11-50	45 contacts →
	Indirect evidence “A team of Young qualified Accountants in London, serving clients nationwide.” Source: RevenueBase Database · checked Sep 19, 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: bookkeeping 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 bookkeeping firms.
Partial evidence: Its own public description names part of bookkeeping firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name bookkeeping 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 4,675 bookkeeping firms based in the United Kingdom

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Bookkeeping firms based in the United Kingdom at a glance

As of Sep 19, 2026

26.6%Verified-email coverage

4.8Average contacts per company

1-10Median size (employees)

16.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

3,812

11-50

716

51-200

201-500

501-1,000

1,001-5,000

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 4,675 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 bookkeeping 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 the United Kingdom whose own description of what they do matches “bookkeeping 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 bookkeeping 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 bookkeeping firms, 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, 5,942 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 19, 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.

Bookkeeping firms 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 bookkeeping 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 bookkeeping firms are there based in the United Kingdom?

RevenueBase identified 4,675 bookkeeping firms 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?

Taxassist Accountants, headquartered in Norwich, tops this list with the largest team on record.

Which city has the most bookkeeping firms?

London leads with 758 headquartered companies, followed by Manchester (87) and Bristol (63).

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 5,942 verified decision-maker contacts tracked across these 4,675 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 19, 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.