Bookkeeping Companies Using WordPress in the UK: 1,817 Active Firms (2026)
Bookkeeping firms using a public-site CMS provide payroll, accounts and outsourced finance administration across the UK.
For bookkeeping and payroll providers, WordPress usually sits at the front of demand generation rather than inside the finance workflow itself. It gives firms a controllable way to publish payroll, accounts, management reporting and tax-support service lines, route enquiries and reassure buyers about compliance-led administration. Adoption tends to signal a practice with enough marketing ownership to manage content, forms and basic conversion tracking, but not necessarily a large engineering team. The buying audience is mainly business clients, often SME and mid-market finance teams looking for outsourced accounts support, with engagements framed around retained administration, payroll cycles and recurring reporting rather than one-off web transactions.
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The UK adoption picture covers 1,817 actively trading bookkeeping and payroll providers running WordPress. Across sector websites where a CMS is identified, WordPress accounts for 73.1% of a 2,486-site CMS base, placing it ahead of hosted-site and agency-built alternatives rather than in a fragmented tail. Registered offices skew towards London (22.3%), followed by the South East (13.2%), North West (11.7%), East of England (10.4%) and West Midlands (8.9%). Reported employment totals 5,063 people, while the typical adopter remains modest in operating scale, with median headcount of 6 and median turnover of about £275,000.
Bookkeeping and payroll providers handle employer, employee and tax information, so website procurement is rarely just a design choice. Contact forms, analytics tags and spam-prevention tools create points where consent wording, retention practice and access controls matter, particularly when onboarding routes ask clients to describe payroll volumes or finance operations. WordPress also brings a broad plugin and agency-service model, which helps small practices publish without much internal technical capacity but can leave maintenance, patching and ownership dispersed across external suppliers. The presence of a familiar CMS is more a signal of public-channel maturity than of back-office system sophistication.
Adoption appears likely to remain sticky among regional bookkeeping practices because the stack fits brochure-led service marketing, local search and periodic content updates without requiring a dedicated product team. Migration pressure tends to arise where templates become dated, security maintenance is neglected or broader practice-management suites bundle website and client-onboarding functions together. Scaled providers may treat the CMS as only the presentation layer, while client portals, payroll workflows and reporting tools sit elsewhere. The more interesting split is therefore not adoption versus non-adoption, but whether firms use the site as a live acquisition channel or leave it as a static credential page.
Adoption by company size
Adoption of WordPress rises with company size across the trading UK bookkeeping companies in this cohort. 8.5% of the 16,109 companies with under 10 employees run WordPress (1,366 detected). 53.4% of the 830 companies with 10–50 employees run WordPress (443 detected). 57.1% of the 42 companies with over 50 employees run WordPress (24 detected). That is a 48.6% gap between the over 50 employees and under 10 employees bands.
1,817
Active firms
2026
73.1%
Of detected CMS share
UK bookkeeping
6
Median headcount
Filed accounts
3,360
Verified contacts
Across this cohort
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Key facts
About 1% of the trading cohort reports turnover above £5M (20 of 1,817 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (79 firms), so a sizeable share is in its first few filing cycles.
Among 2,486 bookkeeping firms with a detectable CMS, this CMS appears on 73.1% of sites (1,817), ahead of the next detected system at 7.7% (192).
London accounts for 22.3% of the CMS-running bookkeeping cohort (406), followed by the South East at 13.2% (239) and the North West at 11.7% (213).
SEO plug-ins are visible on 50.2% of sites (912), analytics tags on 46.0% (836), and anti-spam widgets on 40.5% (735).
The tag mix is bookkeeping-led: Accounting & Audit covers 100.0% (1,817), with Management Consulting at 6.3% (114) and Wealth Management at 4.0% (72) as sector overlaps.
CMS market share among UK Bookkeeping
Share of the 2,486 UK Bookkeeping with a detectable system. As of June 2026.
What else do WordPress-running Bookkeeping run?
Share of the 1,817 WordPress-running UK companies where each technology was also detected. As of June 2026.
Where WordPress 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
£275.4K
Median UK turnover
1.1%
Above £5M turnover
79
Incorporated since 2022
3,360 verified decision-maker contacts
across these 1,817 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Bookkeeping using WordPress
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 payroll bureau services including payroll setup, data processing, payslip production, HMRC submissions, year‑end reporting and PAYE settlement calculations. Also offers consultancy on VAT,…
Serves businesses needing payroll bureau support, including individual and corporate payroll clients, and targets mainly large multinational companies across the UK for VAT, payroll and benefits…
Financial Health
StrongStrong · Hiring · 6% 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 5 filingsProvides outsourced finance and accounting services to businesses, including part-time finance director support, bookkeeping, VAT returns, payroll processing, and management of finance department…
Serves businesses of all sizes, from startups to FTSE100 members, with particular focus on service firms, technology companies, high-growth businesses and UK subsidiaries of overseas parent…
Financial Health
StrongStrong · Growing, Hiring · 21% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides outsourced payroll bureau services for businesses and accountants, including payroll processing, BACS payment processing, pension auto‑enrolment administration, HMRC reporting, employee…
Sells to UK businesses outsourcing payroll, especially hospitality operators. Targets finance directors, CFOs, financial controllers and operations managers, and also accountants and bookkeepers…
Financial Health
HealthyHealthy · -1% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides accounting and taxation services including bookkeeping, payroll processing, VAT returns, statutory accounts, and financial reporting. Offers business and personal tax advice, financial…
Serves UK businesses, charities and other organisations, alongside individuals such as expatriates and personal tax clients; targets owners, finance teams, employers and trustees.
Financial Health
HealthyHealthy · Profitable · 4% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides outsourced payroll services for UK businesses, including payroll processing, pension auto‑enrolment administration, BACS payment submission, P11D reporting, and payroll software integration.…
Serves B2B customers, primarily UK micro, small and medium businesses across varied industries, as well as accountants and bookkeepers needing outsourced payroll support for their own client bases.
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
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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 outsourced payroll and compliance services for organisations engaging freelancers and temporary workers in media, production and creative industries, including onboarding, invoice…
Serves production, entertainment, media and creative businesses that directly hire freelance or temporary workers, from teams using a handful of freelancers to organisations managing 1,000+.
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides outsourced accounting and finance services for law firms, including legal cashiering, management accounts, payroll administration, credit control, statutory accounts preparation, tax return…
Serves UK law firms of all sizes, including start-up, medium-sized and large practices, seeking outsourced legal finance and accounting support.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides accountancy and tax advisory services including bookkeeping, payroll management, VAT returns, budgeting and cashflow planning, tax planning, company secretarial services, and setup and…
Serves UK businesses of all sizes, from small employers to organisations with up to 1,000 staff, whose owners or finance teams need regular accounting and tax support.
Financial Health
StrongStrong · -3% CAGR over 3y
Location
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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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Computed from 3 filingsProvides umbrella payroll and CIS payment services for contractors and recruitment agencies. Also offers accountancy, PAYE payroll administration, and tax, legal, and HR support related to contractor…
Serves UK contractors, CIS and limited company workers, and recruitment agencies/recruiters placing contract candidates in the contractor market.
Financial Health
StrongStrong · Profitable · -1% CAGR over 2y
Location
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Financial sub-scores
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
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 5 filingsProvides accountancy and business advisory services including tax planning and compliance, statutory accounts preparation, audit, payroll, bookkeeping, management accounting, and company secretarial…
Serves businesses and individuals across the UK and internationally, including overseas entrepreneurs and companies entering the UK market, and established organisations requiring accountancy, tax,…
Financial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
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Computed from 5 filingsProvides accounting and tax services to businesses and individuals, including bookkeeping, payroll, statutory accounts, VAT compliance, audit, management accounts, and business tax planning. Also…
Sells to UK businesses and individual taxpayers needing accounting and tax support, including startups, growing companies, medical practices, property landlords, and organisations requiring audit,…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
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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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Computed from 3 filingsProvides payroll and accountancy services for businesses, agencies and contractors, including PAYE and umbrella payroll, CIS payroll administration, bookkeeping, VAT and tax returns, year-end…
Serves businesses and independent contractors, including recruitment agencies, employers, accountants, CIS contractors and personal service companies.
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 2y
Location
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Computed from 4 filingsProvides accountancy and business advisory services including audit and assurance, corporate and private tax planning, payroll, outsourcing and digital accounting, corporate finance and fundraising…
Serves entrepreneurs, owner-managed businesses and other organisations needing accountancy, tax, audit and corporate finance support, plus private clients. Case studies indicate mid-sized companies…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides accounting, audit and assurance, tax compliance and planning, payroll, bookkeeping, and statutory accounts preparation. Also offers business consultancy, financial advisory, company…
Serves small and midsize businesses and accountancy practices, primarily in the UK, with international clients across markets linked to the UK, India, UAE, USA and Nepal.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides outsourced finance department services for businesses, including bookkeeping, supplier payments, credit control, management accounts, VAT returns and payroll. Also offers part‑time finance…
Serves entrepreneurs and growing businesses seeking outsourced finance support, with a focus on creative, design and technology companies plus clients in food and drink and financial services.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Computed from 4 filingsProvides payroll and back‑office services for contractors, freelancers and recruitment agencies, including PAYE umbrella employment, Construction Industry Scheme (CIS) payroll, payroll bureau…
Serves UK contractors and freelancers, recruitment agencies, and businesses using contract workforces, including construction workers under CIS and organisations needing outsourced…
Financial Health
StrongStrong · Profitable · -11% CAGR over 2y
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 2 filingsProvides accountancy and financial administration services for businesses, including management accounts, bookkeeping, VAT, payroll bureau services, BACS payment processing, annual accounts and tax…
Serves a mix of B2B and individual clients across the UK, especially owner-managed businesses, franchise owners and franchisees needing accounting, payroll, tax and payment bureau support.
Financial Health
StrongStrong · -8% CAGR over 1y
Location
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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 outsourced payroll management for PAYE staff, including temporary workers, along with HR administration, workplace pension auto‑enrolment support, employee benefits via a mobile app, and…
Serves businesses that employ permanent or temporary PAYE staff, particularly employers seeking outsourced people administration, employee benefits, workplace pensions and compliance support.
Financial Health
StrongStrong
Location
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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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Computed from 4 filingsProvides umbrella payroll services for contractors and temporary workers, employing them to manage pay, tax and statutory employment rights while they work on assignments. Also offers CIS payroll and…
Serves UK contractors and temporary workers, including new and experienced umbrella employees, CIS workers, and contractors operating through limited companies.
Financial Health
StrongStrong · Hiring · 7% CAGR over 6y
Location
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Computed from 5 filingsProvides back‑office accountancy services to businesses, including bookkeeping, payroll processing, management accounts, and financial controller or finance director support, helping companies manage…
Serves self-employed people, start-ups, SMEs, employers, entrepreneurs and business owners, plus individuals needing tax support, across sectors including hospitality, property, ecommerce, retail,…
Financial Health
HealthyHealthy · Hiring · 24% CAGR over 4y
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Computed from 5 filingsProvides funding, payroll processing and back‑office administration for recruitment agencies. Services include invoice factoring, invoicing, credit control, contractor payroll, contractual…
Serves start-up and established SME recruitment agencies across the UK, particularly owners and managers running temporary worker payroll and back-office operations.
Financial Health
StrongStrong · Hiring · 254% CAGR over 4y
Location
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Computed from 3 filingsProvides accounting and tax services for businesses, including accounts preparation, management accounts, payroll bureau services, tax returns and consultancy, and business planning and financial…
Serves growing businesses across the Midlands and East of England, including organisations in various industries that need external support with finance, payroll, tax and management accounts.
Financial Health
StrongStrong · -4% CAGR over 2y
Location
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Computed from 5 filingsProvides UK accounting, tax, payroll and VAT services for overseas businesses operating or expanding in the UK. Assists with company formation, bank account setup, compliance, and ongoing financial…
Serves overseas businesses establishing or operating in the UK, including start-ups, growing companies, large corporations and subsidiaries of international firms across IT, property, construction,…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
Location
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Computed from 3 filingsProvides contractor payroll services including umbrella employment payroll, Construction Industry Scheme (CIS) payment processing, and outsourced payroll bureau services. Handles tax, National…
Serves contractors on temporary assignments, construction businesses using CIS subcontractors, and companies across industries that outsource payroll administration.
Financial Health
StrongStrong · Growing, Hiring · 56% CAGR over 2y
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Computed from 4 filingsProvides accounting and tax advisory services including statutory accounts, bookkeeping, payroll, VAT and corporation tax compliance. Also offers tax planning, inheritance tax advice, HMRC…
Serves scaling and high-growth businesses, corporates of all sizes across the UK from pre-revenue to exit, finance teams needing support, and high-net-worth individuals with complex UK tax needs.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
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Computed from 5 filingsProvides bookkeeping, payroll outsourcing, and accounting services for businesses, including business accounts preparation, credit control, CIS tax returns, and business tax planning, helping…
Serves small and owner-managed businesses across the UK, including employers with payroll obligations and construction-sector firms needing CIS support.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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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
Location
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Computed from 5 filingsProvides accounting and business advisory services including preparation of annual accounts, bookkeeping, payroll processing, tax planning and compliance, audit support, and advice for business…
Serves UK businesses of all sizes, from start-ups to established organisations, seeking accounting, payroll, tax, bookkeeping, audit and advisory support.
Financial Health
StrongStrong · Growing, Hiring · 21% CAGR over 4y
Location
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Computed from 5 filingsProvides accounting and bookkeeping, payroll administration, and tax compliance services. Also supports company formation and structuring, HR processes, employment contracts, employee verification,…
Serves businesses and private equity-backed companies expanding into international markets, including leadership teams managing overseas subsidiaries, hiring, payroll, tax and compliance across…
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
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Computed from 3 filingsProvides accounting, audit and tax advisory services for businesses and charities. Also offers payroll, bookkeeping, company secretarial support, financial reporting, R&D tax relief consulting,…
Serves owner-managed businesses of all sizes, company directors and business owners, including charities, mainly organisations looking for a long-term chartered accountancy and tax adviser.
Financial Health
StrongStrong · Growing · 4% CAGR over 2y
Location
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Computed from 3 filingsProvides umbrella employment, payroll and accountancy services for contractors and recruitment agencies. Manages PAYE payroll, CIS payments and administration for contractors operating via umbrella,…
Serves recruitment agencies, contractors and temporary workers, including construction workers under CIS and contractors operating through limited companies or PSCs. Targets both B2B agencies and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
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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
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Computed from 5 filingsProvides accountancy and financial advisory services for startups and scale-ups, particularly in technology, biotech and e‑commerce. Services include bookkeeping, payroll, VAT and tax compliance,…
Serves early-stage and scale-up businesses, especially Tech, BioTech and E-Commerce startups, from seed stage through Series A/B funding and exit, including founders seeking investor-ready finance…
Financial Health
StableStable · Hiring · 12% CAGR over 3y
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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 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 5 filingsProvides payroll processing, staff rota management, and bookkeeping services for small and medium-sized businesses. Maintains employee pay records, schedules staff, and manages financial bookkeeping…
Serves small to mid-sized UK businesses, including healthcare and social care providers, retailers, hospitality operators, schools, universities, cleaning and maintenance firms, logistics and…
Financial Health
StrongStrong · Growing, Hiring · 100% CAGR over 4y
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Computed from 5 filingsProvides outsourced payroll bureau services for businesses, including payroll processing, BACS payment handling, HMRC PAYE submissions, payroll reporting, electronic payslips, and support with…
Serves UK employers and accountancy firms that need outsourced payroll support, including small businesses and companies with PAYE, auto-enrolment and employee payment obligations.
Financial Health
HealthyHealthy · Hiring · 2% CAGR over 4y
Location
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Computed from 5 filingsProvides accountancy and business advisory services including accounts preparation, bookkeeping, payroll, tax compliance and planning, company secretarial and formation services, business valuations,…
Serves established and growing businesses throughout the West Midlands, targeting business owners and management teams seeking financial compliance and advisory support.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides accounting and audit services, tax and VAT compliance, payroll and HR support, and business advisory services. Uses digital accounting systems and client portals to support financial…
Serves businesses of varied sizes, including start-ups and growing companies, plus individual clients; also works with overseas-headquartered organisations requiring UK compliance support.
Financial Health
StrongStrong · Hiring · 8% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy and taxation services for businesses, including preparation of statutory accounts and tax returns, audit services, bookkeeping, VAT and management accounts, payroll processing,…
Serves SMEs, business groups, charities, solicitors, financial services firms, and business owners needing personal and commercial accountancy support, mainly across the West Midlands and further…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
Location
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Computed from 5 filingsProvides online accounting services for small businesses, sole traders, freelancers and landlords. Services include bookkeeping, payroll, VAT returns, self‑assessment and company tax returns,…
Serves small business owners, sole traders, freelancers, limited companies, landlords, LLPs and start-ups across the UK, including tradespeople and independent service providers.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 4y
Location
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Showing 50 of 1,817 — +1,767 more with verified decision-maker contacts, live data, and CRM sync.
Unlock all 1,817 leads
Showing 50 of 1,817 — +1,767 more with verified decision-maker contacts, live data, and CRM sync.
How WordPress 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.
WordPress 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
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