Bookkeeping Companies Using Google Tag Manager in the UK: 742 Active Firms (2026)
Bookkeeping firms running website tag management handle accounts, payroll and reporting for UK clients while signalling measurable digital acquisition.
A tag-management layer lets bookkeeping practices change analytics, advertising pixels and enquiry-form tracking without asking a developer to edit each page. For firms selling accounts preparation, payroll and financial administration, running it tends to signal a direct-channel acquisition model: content, paid search, referral pages and online quote flows all need measurable hand-offs. The buying centre is usually marketing or a digitally minded practice owner, with finance and operations involved where enquiry quality affects workload. Typical engagements remain recurring service retainers, not enterprise software projects.
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The UK adoption cohort contains 742 actively trading bookkeeping and accounting-service firms running this tag-management stack. Reported employment totals 2,765 people, so the visible footprint is weighted towards small practices even though some multi-site providers also appear. Within detected tag-manager use for this sector, this stack sits first at 100.0%; another tag-management system appears at 0.3%. The regional skew is clear but not wholly London-centric: London accounts for 22.8%, followed by the South East at 14.8%, the North West at 14.6%, the East of England at 10.0% and the West Midlands at 8.9%.
Tag-management in bookkeeping sits close to consent, attribution and client-trust questions rather than product regulation. Under GDPR and ICO guidance, practices need to explain analytics and advertising tags clearly, respect consent choices where required, and avoid leaking payroll or financial-enquiry context through poorly configured tracking. Procurement tends to be light: the system is commonly bundled into website builds, paid-search support or outsourced marketing retainers. That makes governance uneven, because responsibility may sit with an agency while the professional relationship and reputational risk remain with the bookkeeping firm.
Adoption appears tied less to bookkeeping delivery than to how firms source recurring clients. Practices with content-led acquisition, online enquiry handling and outsourced marketing support tend to keep tag-management in place, while very small firms may rely on simpler analytics setups. The next phase is likely to be shaped by privacy controls, browser restrictions and bundled website services rather than by new bookkeeping use cases. Consolidation among digital marketing suppliers could make implementation tidier, but measurement quality will still depend on whether practice owners treat attribution as an operational discipline rather than an ad hoc website task.
Adoption by company size
Adoption of Google Tag Manager rises with company size across the trading UK bookkeeping companies in this cohort. 3.4% of the 16,109 companies with under 10 employees run Google Tag Manager (553 detected). 22.3% of the 830 companies with 10–50 employees run Google Tag Manager (185 detected). 40.5% of the 42 companies with over 50 employees run Google Tag Manager (17 detected). That is a 37.1% gap between the over 50 employees and under 10 employees bands.
742
Active firms
2026
100%
Of detected Tag managers share
UK bookkeeping
6
Median headcount
Filed accounts
1,576
Verified contacts
Across this cohort
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Key facts
About 1% of the trading cohort reports turnover above £5M (8 of 742 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (34 firms), so a sizeable share is in its first few filing cycles.
Among bookkeeping firms with a detectable tag manager, this system appears on 100.0% (742); a second detected tag-management system appears on 0.3% (2).
London accounts for 22.8% (169) of bookkeeping firms running the tag manager, followed by the South East at 14.8% (110) and the North West at 14.6% (108).
The most common co-detected content-management system appears on 68.2% (506) of sites, suggesting many of these bookkeeping firms maintain editable marketing websites.
Web analytics is also detected on 44.3% (329) of sites, while search-optimisation tooling appears on 40.4% (300).
Adjacent sector tags show overlap with wealth management at 7.4% (55) and management consulting at 7.4% (55), reflecting bookkeeping firms that sell into broader finance-administration work.
Tag manager market share among UK Bookkeeping
Share of the 742 UK Bookkeeping with a detectable system. As of June 2026.
What else do Google Tag Manager-running Bookkeeping run?
Share of the 742 Google Tag Manager-running UK companies where each technology was also detected. As of June 2026.
Where Google Tag Manager Bookkeeping are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
6
Median headcount
£279.1K
Median UK turnover
1.1%
Above £5M turnover
34
Incorporated since 2022
1,576 verified decision-maker contacts
across these 742 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Bookkeeping using Google Tag Manager
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsProvides outsourced accounting services for businesses, including bookkeeping, VAT returns, payroll processing, management accounts, financial forecasting, year‑end accounts and tax preparation, and…
Serves growing UK-based businesses and charities that want to outsource their finance function, particularly organisations needing ongoing support and a proactive finance partner rather than one-off…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Financial sub-scores
Computed from 2 filingsProvides accountancy and business advisory services including audit and assurance, tax compliance and planning, payroll, corporate finance, outsourced finance functions, wealth management, IT…
Serves UK businesses and individuals, including food production, industrial and logistics, retail and wholesale, technology, professional services, and organisations trading internationally.
Financial Health
HealthyHealthy · Profitable, Growing, Hiring · 109% CAGR over 1y
Location
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Financial sub-scores
Computed from 3 filingsProvides accounting, audit and assurance, bookkeeping, payroll, and cloud accounting services. Advises businesses and individuals on tax planning, corporate finance, financial planning, and strategy,…
Serves sole traders, startups, SMEs and large corporates across multiple sectors, plus individuals and families, with particular focus on agriculture and landed estates, not-for-profits, healthcare,…
Financial Health
StrongStrong · 3% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides online accounting services for businesses and self‑employed individuals, including bookkeeping, payroll processing, VAT returns, tax filing, accounts preparation, management accounts, and…
Serves UK small businesses, startups, limited companies and sole traders, with sector focus on construction CIS, ecommerce, digital content creators, landlords, taxi drivers, driving instructors and…
Financial Health
StrongStrong · Hiring · 29% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides outsourced accounting services for small and medium-sized businesses, including bookkeeping, payroll, tax compliance, management accounting, and Xero support. Also offers business advisory,…
Serves UK small and medium-sized business owners needing ongoing finance function support, tax compliance, bookkeeping, payroll and business advisory input, rather than individual consumers.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides online accounting services for sole traders, freelancers, partnerships and limited companies, including company accounts preparation, tax returns, VAT returns, bookkeeping, payroll…
Serves UK-based sole traders, small businesses, limited companies, partnerships, LLPs, contractors, freelancers and individuals seeking fixed-fee online accountancy support.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides accounting and tax services to businesses and individuals, including annual accounts preparation, bookkeeping, payroll, VAT returns, corporate and personal tax planning, company formation,…
Serves UK businesses from independent SMEs to large multinationals, plus private individuals, across e-commerce, hospitality, property, retail/wholesale, manufacturing, legal/professional, start-up,…
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides chartered accountancy and business advisory services including audit, bookkeeping and accounts preparation, corporate and personal tax planning, payroll administration, VAT and R&D tax…
Serves businesses, charities, academies, professionals and individuals, with sector focus including agriculture, healthcare, hospitality, manufacturing, property, retail, technology, transport and…
Financial Health
HealthyHealthy · Profitable, Hiring · 6% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides accounting and financial management services for businesses and self‑employed clients, including bookkeeping, VAT returns, payroll, accounts preparation and tax returns, alongside cloud…
Serves small and medium-sized businesses, freelancers and self-employed clients, including hospitality operators such as restaurants, hotels, bars, pubs and clubs, as well as builders and…
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides accountancy and tax services to businesses and individuals, including audit, bookkeeping, payroll, financial statements, management accounts and VAT. Also offers tax planning, HMRC…
Serves businesses and their owners, academy trusts, healthcare organisations, property and construction firms, renewables businesses, and individuals with personal tax needs.
Financial Health
HealthyHealthy · Growing, Hiring · 19% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides digital accounting and tax services for businesses and individuals, including bookkeeping, cloud accounting, management accounts, payroll, VAT returns, corporation tax, and self‑assessment.…
Serves UK start-ups, scale-ups, SMEs and growing businesses, plus consultants, high earners, directors/shareholders and accountancy firms needing corporate finance support.
Financial Health
HealthyHealthy · Hiring · 75% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides online accountancy services for freelancers, contractors, sole traders and small businesses. Services include bookkeeping, tax returns, financial planning, and support for limited companies,…
Serves self-employed professionals, contractors, freelancers, sole traders, landlords, limited companies and SMEs, including IT, healthcare, engineering, aviation, oil and gas, renewables, consulting…
Financial Health
StrongStrong · Hiring · 6% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides online accounting and tax services for freelancers, contractors, landlords and small businesses, including bookkeeping, payroll, VAT returns, self‑assessment, year‑end accounts, tax…
Serves UK small businesses, start-ups, contractors, freelancers, sole traders, landlords and construction firms, plus business owners and private clients.
Financial Health
HealthyHealthy · -39% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsProvides accounting, audit and tax advisory services, including annual accounts preparation, corporation tax and VAT returns, bookkeeping, payroll, management accounts and personal tax. Also offers…
Serves businesses and private clients, including limited companies, solicitors subject to accounts rules, Innovate UK-funded businesses, organisations considering M&A, and individuals with personal…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides online accounting and tax services for individuals, contractors and small businesses, including bookkeeping, payroll, VAT and corporation tax returns, self‑assessment, company formation,…
Serves small businesses and individuals, including limited companies, partnerships, sole traders, contractors, freelancers, landlords, self-employed workers, start-ups, e-commerce sellers,…
Financial Health
StrongStrong · Hiring · 46% CAGR over 4y
Location
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Computed from 5 filingsProvides outsourced finance and accounting services for businesses, including bookkeeping, payroll, tax planning, R&D tax credit claims, budgeting, forecasting, and financial reporting, supported by…
Serves startups and growing SMEs needing ongoing finance support, including founders and management teams looking for bookkeeping, tax, payroll, forecasting and CFO-style guidance.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 5y
Location
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Financial sub-scores
Computed from 4 filingsProvides accounting and business advisory services including auditing, bookkeeping, payroll, tax planning, VAT advice, corporate finance, restructuring support, and probate and estate administration…
Serves UK businesses, charities and individuals, with sector focus on construction, health and social care, hospitality, manufacturing and engineering, professional services, property, recruitment…
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 3y
Location
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Financial sub-scores
Computed from 4 filingsProvides accounting, audit, tax and financial outsourcing services for businesses. Offers annual accounts preparation, payroll, company secretarial support, business tax and advisory services,…
Serves UK businesses, from owner-managed SMEs to larger corporates, with a focus on media and entertainment, infrastructure and renewable energy, and growing SME clients.
Financial Health
HealthyHealthy · Hiring · 30% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides accountancy and business advisory services including tax planning and compliance, audit, accounts preparation, payroll, bookkeeping, and cloud accounting. Also offers corporate finance…
Serves businesses and entrepreneurs, particularly small, family and owner-managed firms, start-ups and business owners. Targets organisations in construction, property, legal, charities, education,…
Financial Health
HealthyHealthy · Hiring · 24% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy services for contractors operating through limited companies, umbrella companies, or as sole traders. Offers company formation, bookkeeping and tax planning, umbrella payroll…
Serves contractors, freelancers and self-employed professionals, including limited company directors, umbrella workers, CIS construction contractors and sole traders, plus recruitment agencies…
Financial Health
StrongStrong · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides accountancy and business advisory services for small and medium-sized businesses, including annual accounts, bookkeeping, management accounts, payroll, VAT and tax compliance,…
Serves small and medium-sized business owners across the UK, including sole traders, partners, directors and limited companies in sectors such as construction, hospitality, property, retail,…
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
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Computed from 3 filingsProvides chartered accountancy and business advisory services including auditing, annual accounts, bookkeeping, payroll, VAT and tax returns. Also offers strategic consultancy such as financial…
Serves owner-managed businesses, organisations and private individuals in Cheshire and Yorkshire, including business owners seeking strategic finance input and personal clients with tax, wealth,…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 2y
Location
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Computed from 5 filingsProvides accountancy, audit, tax planning, payroll, corporate finance and business advisory services, including mergers and acquisitions support, cloud accounting, digital transformation and property…
Serves SMEs and organisations in education and academies, haulage and logistics, hospitality, media, entertainment and sport, professional services and recruitment, plus property owners and private…
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 5 filingsProvides outsourced accounting services for businesses, including bookkeeping, payroll processing, financial reporting, and finance director support. Integrates with clients’ accounting software and…
Serves UK businesses, including growing companies, limited companies, corporate clients and letting agents, with buyers likely to be owners, directors and finance teams.
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 4y
Location
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Computed from 4 filingsProvides online accountancy services for freelancers, contractors, e‑commerce sellers and small businesses, including bookkeeping, VAT returns, tax filings, company formation, and accounts…
Serves UK freelancers, contractors, ecommerce and online retailers, content creators, consultants and small businesses, including new limited companies and SMEs switching accountants.
Financial Health
StrongStrong
Location
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Computed from 4 filingsProvides chartered accountancy services including bookkeeping, payroll, tax planning and compliance, management accounts, financial reporting and forecasting. Also offers cloud accounting, outsourced…
Serves UK individuals, start-ups, small businesses and limited companies, with sector focus on manufacturing, hair and beauty, freelancers, transport, retail, construction, property, hospitality,…
Financial Health
StrongStrong · Growing, Hiring · 21% CAGR over 3y
Location
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Computed from 5 filingsProvides audit, accountancy and tax services including statutory and external audits, bookkeeping, payroll, corporate and personal tax planning, and R&D tax credit claims. Offers business advisory,…
Serves UK businesses and individuals, including startups and firms in legal, travel and hospitality, tech, property, digital assets, healthcare, care homes and FCA-regulated sectors.
Financial Health
StrongStrong · Growing, Hiring · 72% CAGR over 4y
Location
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Computed from 5 filingsProvides accounting, payroll, audit and tax services for businesses, along with corporate finance advice, research and development tax relief and capital allowances claims, and wealth planning…
Serves business clients and organisations in the North West, with sector pages for academies, medical practices, agriculture, solicitors, manufacturing, automotive and property businesses.
Financial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
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Computed from 5 filingsProvides accountancy and tax advisory services to small businesses and owner‑managed companies, including bookkeeping and accounting systems, audit and assurance, payroll, company secretarial…
Serves owner-managed and small businesses, sole traders and limited companies in Northampton and Northamptonshire, targeting business owners seeking accountancy and tax support.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
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Computed from 3 filingsProvides chartered accountancy and business advisory services including bookkeeping, year‑end and management accounts, statutory audits, VAT, payroll processing, and corporate and personal tax…
Serves SMEs, corporate clients, healthcare providers, property services firms, solicitors, charities and private clients, primarily around Birmingham and the Midlands.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 2y
Location
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Computed from 3 filingsProvides accounting, audit, tax and business advisory services to businesses and individuals. Services include bookkeeping, payroll, VAT and corporation tax compliance, management accounts, corporate…
Serves SMEs, start-ups, UK subsidiaries, charities and not-for-profits across Yorkshire and beyond, including engineering, manufacturing, hospitality, property, construction, farming, technology,…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 2y
Location
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Computed from 3 filingsProvides accounting and tax advisory services including financial accounts, bookkeeping, VAT and payroll, audit, and tax compliance. Also offers corporate finance, business advisory, insolvency…
Serves owner-managed businesses, limited companies, family offices, schools and charities, plus individuals with personal tax, wealth, probate or insolvency needs.
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
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Computed from 5 filingsProvides accountancy and business advisory services including bookkeeping, annual accounts preparation, VAT returns, payroll processing, personal and corporate tax compliance, audit and assurance,…
Serves business owners, CEOs and managing directors, mainly SMEs and start-ups in building, property, legal, healthcare, retail, ecommerce, hospitality, leisure, digital, technology and education…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
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Computed from 5 filingsProvides bookkeeping, accountancy, tax compliance, and payroll services for businesses. Handles payroll processing, tax return preparation, and financial administration, and supports compliance with…
Serves UK businesses across various sectors, especially employers and organisations seeking outsourced finance administration, payroll support, tax compliance and Making Tax Digital help.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
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Computed from 5 filingsProvides accountancy and business advisory services to SMEs, including preparation of annual accounts and tax returns, bookkeeping, VAT and payroll processing, management accounts, cashflow…
Serves SMEs and owner-managed businesses in Chelmsford, Tiptree and Essex, from start-ups to larger established companies.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
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Computed from 3 filingsProvides chartered accountancy services for businesses and individuals, including bookkeeping, financial accounts preparation, corporate and personal tax planning, VAT, payroll, company secretarial…
Serves SMEs, start-ups, small to large businesses, and individual clients needing accounting, tax and financial advice. Also targets sector-specific customers in construction and retail, plus…
Financial Health
StrongStrong · -2% CAGR over 2y
Location
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Computed from 5 filingsProvides online accounting services for small businesses and individuals, including annual accounts preparation, tax returns, VAT returns, bookkeeping, payroll management, CIS returns, and virtual…
Serves UK small businesses and growing companies, including startups, sole traders, limited companies, partnerships, LLPs, contractors, ecommerce firms, pubs, retailers and construction businesses.
Financial Health
StrongStrong · Hiring · 22% CAGR over 4y
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Computed from 3 filingsProvides accounting and advisory services including audit and assurance, bookkeeping, payroll, company secretarial support, corporate and personal tax planning, VAT and customs advice, valuations,…
Serves businesses from start-ups and small firms to international groups, plus private individuals and families. Also targets charities, schools, regulated firms and sector-specific organisations…
Financial Health
StrongStrong · Hiring · 150% CAGR over 2y
Location
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Computed from 5 filingsProvides accountancy and business advisory services, including audit, tax planning, payroll, corporate finance, business recovery, forensic accounting, and VAT advice. Supports private companies,…
Serves private companies, large corporates, not-for-profits and private individuals, with sector focus including academies, agriculture, charities, hospitality, manufacturing, healthcare, property…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides accountancy services including accounts preparation, personal and corporate tax advice, payroll administration, bookkeeping and VAT support, company secretarial services, and guidance for…
Serves businesses of all sizes, including sole traders, partnerships, limited companies and startups, plus individuals needing personal tax support.
Financial Health
StrongStrong · Growing, Hiring · 2% CAGR over 4y
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Computed from 5 filingsProvides accounting and tax services for businesses and individuals, including bookkeeping, payroll, VAT and corporation tax returns, audit and assurance, financial planning, corporate finance,…
Serves a mix of B2B and individual clients, including owner-managed businesses, landlords, property developers, charities, care homes, schools, farms, healthcare practices, hospitality firms,…
Financial Health
StableStable · Hiring · 57% CAGR over 4y
Location
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Computed from 5 filingsProvides accounting, tax compliance and advisory services for businesses and individuals, including cloud accounting, management reporting, payroll, company formations, company secretarial support,…
Serves businesses, business owners, entrepreneurs, professionals, landlords and private individuals with complex tax affairs, across accounting, tax, wealth and business advisory client segments.
Financial Health
StrongStrong · Growing, Hiring · 24% CAGR over 4y
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Computed from 3 filingsProvides accountancy and business support services including bookkeeping, payroll, VAT and tax returns, tax planning, and cloud accounting. Also advises on business planning, company secretarial…
Serves businesses and individual taxpayers, particularly startups and established SMEs needing ongoing accountancy, bookkeeping, payroll, VAT and tax support, plus business owners seeking planning…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 2y
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Computed from 5 filingsProvides accounting and tax services to businesses and individuals, including accounts preparation, bookkeeping, payroll, VAT returns, business tax planning, personal tax advice, cloud accounting…
Serves SMEs, limited companies, sole traders, buy-to-let landlords and personal tax clients, mainly across the South of England, including businesses with or without in-house finance teams.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
Location
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Computed from 3 filingsProvides outsourced accounting services including management accounts, bookkeeping, VAT returns and payroll processing. Supports businesses with financial reporting, PAYE and pension administration,…
Serves small and growing businesses, accountancy practices seeking white-label support, and staff using bookkeeping, payroll and office software, with emphasis on Cheshire/North Cheshire.
Financial Health
StrongStrong · Hiring · 20% CAGR over 2y
Location
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Computed from 5 filingsProvides outsourced accounting and finance services for businesses, including bookkeeping, management accounts, payroll, credit control, debt collection, company registration support, and preparation…
Serves small and medium-sized business owners and ambitious organisations, including start-ups and firms needing part-time commercial finance expertise.
Financial Health
HealthyHealthy · -5% CAGR over 4y
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Computed from 3 filingsProvides accounting and advisory services for businesses and individuals, including bookkeeping, payroll, VAT, corporate tax planning, company secretarial support, corporate finance and recovery, as…
Serves businesses and private individuals, with sector focus on architects, contractors, film, investment and financial firms, retailers and shipping businesses, plus start-ups and owner-managed…
Financial Health
HealthyHealthy · -9% CAGR over 2y
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Computed from 5 filingsProvides accounting and financial advisory services to businesses including year‑end accounts, corporation and personal tax returns, bookkeeping, payroll, VAT, credit control, management reporting,…
Sells to ambitious business owners and SMEs at different lifecycle stages, from early-stage companies to growing or exiting firms, with a stated local focus on West Yorkshire, Hull and Scotland.
Financial Health
HealthyHealthy · Hiring · 24% CAGR over 4y
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Computed from 2 filingsProvides accounting and tax services for freelancers, contractors and small to medium-sized businesses, including payroll management, company formation, bookkeeping, tax returns, and HMRC compliance…
Serves B2B customers in London, including freelancers, contractors, first-time business owners, SMEs and small companies across multiple sectors.
Financial Health
StrongStrong · -7% CAGR over 1y
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Financial sub-scores
Computed from 5 filingsProvides accounting and tax services to businesses and individuals, including bookkeeping, VAT returns, payroll and pension administration, annual accounts, corporation tax planning, CIS support,…
Serves UK startups, sole traders and established companies, alongside individuals needing self-assessment, personal tax, retirement and estate planning support.
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
Unlock all 742 leads
Showing 50 of 742 — +692 more with verified decision-maker contacts, live data, and CRM sync.
Unlock all 742 leads
Showing 50 of 742 — +692 more with verified decision-maker contacts, live data, and CRM sync.
How Google Tag Manager usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling. bookkeeping companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of bookkeeping companies with a detectable system — not of all UK companies.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
Sources
- Payroll Outsourcing Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)
- Market Size (2026): USD 13.21 Billion.
- Market Size (2031): USD 17.83 Billion.
- Growth Rate (2026 - 2031): 6.19% CAGR.
- North America accounted for 40.70% of 2025 revenue.
- Asia-Pacific is the fastest-growing region at an 8.78% CAGR through 2031.
Google Tag Manager is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
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Frequently asked questions
How many UK bookkeeping companies use Google Tag Manager?
What share of UK bookkeeping companies run Google Tag Manager?
How is Google Tag Manager usage detected?
What size bookkeeping companies use Google Tag Manager in the UK?
What do Google Tag Manager-running bookkeeping companies also run?
Can I get contact details for these companies?
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