Accounting Companies Using Amazon Web Services in the UK: 108 Active Firms (2026)
Accounting practices using cloud infrastructure deliver audit, tax and advisory services through web-based systems across the UK.
For accounting and audit practices, this public-cloud stack tends to sit behind client portals, marketing sites, recruitment pages and online reporting workflows rather than the practice’s core professional judgement. Adoption usually signals a firm with some internal or outsourced technical ownership: someone is expected to manage hosting, access controls, uptime, analytics tags and supplier contracts. It also points to a more direct digital sales posture, where thought leadership, secure document exchange and sector pages are treated as client-acquisition infrastructure rather than brochureware. Buyers are typically partners, operations heads, marketing teams and IT advisers, not only finance directors.
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108 actively trading UK accounting and audit practices are detected running this cloud stack. Within the sector’s detected PaaS mix, it ranks first at 49.8% of 217 accounting and audit adopters, ahead of other hosted platform options. London accounts for 33.3% of the cohort, followed by the South East at 13.9%, Yorkshire and The Humber and the North West at 10.2% each, and the South West at 6.5%. Reported employment covers 1,205 staff across 85 of 85 assessable entities, giving 100% headcount coverage.
Statutory audit remains a regulated activity, regardless of where client-facing systems are hosted. The FRC is the Competent Authority for public supervision of UK statutory auditors, while registration and day-to-day supervision sit with recognised supervisory bodies; professional qualifications are handled through recognised qualifying bodies. Falling registered-auditor numbers add pressure for shared systems, repeatable controls and documented supplier oversight. For practices running public-cloud infrastructure, client confidentiality, audit-file integrity, access permissions, continuity arrangements and incident handling all sit close to the regulated service, even when the website, portal or reporting layer is delivered by external hosting suppliers.
Adoption appears tied less to experimentation than to client-facing workflow. Smaller practices tend to use public-cloud hosting as a way to run portals, content, recruitment and analytics without maintaining much in-house infrastructure, while larger practices fold the same stack into broader supplier-management and cyber-control processes. The next phase is likely to be shaped by consolidation among audit firms, packaged website-and-portal offerings, and client expectations for document exchange that feels less like email. The constraint is governance: practices can migrate hosting models, but audit accountability and professional-body oversight do not move with the supplier.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
Adoption by company size
Adoption of Amazon Web Services rises with company size across the trading UK accounting companies in this cohort. 0.2% of the 34,652 companies with under 10 employees run Amazon Web Services (79 detected). 1.9% of the 1,209 companies with 10–50 employees run Amazon Web Services (23 detected). 5% of the 60 companies with over 50 employees run Amazon Web Services (3 detected). That is a 4.8% gap between the over 50 employees and under 10 employees bands.
108
Active firms
2026
49.8%
Of detected PaaS share
UK accounting
6
Median headcount
Filed accounts
272
Verified directors
Across this cohort
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Key facts
About 3% of the trading cohort reports turnover above £5M (4 of 108 firms) — the rest sits below that revenue band.
3% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
This public cloud platform has the largest detected PaaS share in accounting and audit, at 49.8% (108) of 217 companies with a detectable system.
81.5% (88) also run cloud object storage, while 40.7% (44) also run a content-delivery layer.
London accounts for 33.3% (36) of the cohort, followed by the South East at 13.9% (15).
Statutory audit is a regulated activity, with the FRC designated as Competent Authority under the Statutory Auditors and Third Country Auditors Regulation 2016.
Registered statutory audit firms fell to 3,760 in 2024 from 5,007 in 2020, a 24.9% decline over five years.
Hosting & PaaS market share among UK Accounting
Share of the 217 UK Accounting with a detectable system. As of June 2026.
What else do Amazon Web Services-running Accounting run?
Share of the 108 Amazon Web Services-running UK companies where each technology was also detected. As of June 2026.
Where Amazon Web Services Accounting 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
£299.3K
Median UK turnover
3.7%
Above £5M turnover
4
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 172 companies, alongside financials and websites, in one CSV file.
Top UK Accounting using Amazon Web Services
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 audit, accounting and assurance, tax advisory and compliance, and business consulting services. Advises organisations on risk management, transactions, finance, technology, and strategy,…
Serves mid-market business leaders worldwide, selling primarily to businesses that need audit, tax and consulting support. Also targets sector-specific clients including real estate firms and…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Provides audit, tax compliance and advisory services to businesses, including accounting, tax planning, risk assurance, consulting and transaction support. Also produces economic and industry…
Serves mid-market businesses and their leaders, including organisations in real estate, consumer markets and other sectors, in the UK and internationally.
Location
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Provides audit and assurance, tax, and business advisory services. Offers consulting in areas including corporate finance, restructuring, risk, cyber security, ESG, and forensic investigations for…
Serves UK businesses and public sector organisations, including privately held companies, public interest entities, financial services firms, consumer markets, energy businesses, government bodies…
Location
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Provides professional services including audit and assurance, tax advisory, corporate finance, restructuring, risk and forensic investigations, cyber security, ESG advisory, and business consulting…
Serves privately held businesses, public interest entities and public sector organisations across sectors including financial services, consumer markets, energy, transport, government, real estate,…
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Provides audit and assurance, tax, and advisory services to businesses, public sector organisations, and financial institutions. Offers consulting in areas such as corporate finance, restructuring,…
Serves privately held businesses, public interest entities and public sector organisations across sectors including financial services, government, consumer markets, energy, real estate, automotive…
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Financial sub-scores
Computed from 5 filingsProvides chartered accountancy and business advisory services, including audit, bookkeeping, payroll, tax planning and compliance. Also offers company secretarial support, HR consultancy, cloud…
Sells primarily to businesses seeking accountancy, tax and advisory support, especially SMEs. Also serves business owners and individuals needing personal wealth and tax advice, with most clients in…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Provides accounting and business advisory services including audit and assurance, bookkeeping, payroll and HR outsourcing, tax planning and compliance, corporate finance, company secretarial support,…
Serves start-ups, growing businesses, companies planning exits, overseas businesses setting up in the UK, charities and not-for-profits, and clients in renewable energy, travel and hospitality,…
Financial Health
N/AN/A
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 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 2 filingsProvides accounting, audit and assurance, tax advisory, bookkeeping, payroll and HR outsourcing, and corporate finance services. Also offers company secretarial, forensic accounting, wealth…
Serves UK and international businesses, including start-ups, growing companies, firms planning exits, charities and not-for-profits, plus clients in renewable energy, travel and hospitality.
Financial Health
WeakWeak · -3% CAGR over 1y
Location
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Computed from 3 filingsProvides accountancy, audit and tax services to businesses and individuals, including bookkeeping, payroll, VAT returns, tax planning and corporate audits. Also offers strategic advisory such as…
Serves ambitious business owners and SMEs through larger organisations, plus charities, FCA/SRA-regulated firms, property, construction, recruitment, professional services, technology, sports, media…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides accounting and business advisory services including audit, bookkeeping, payroll, cloud accounting, tax planning, VAT advice, corporate finance, and banking and restructuring support, working…
Serves local SMEs and owner-managed businesses across Gloucestershire and Herefordshire, plus charities and organisations in construction, health and social care, hospitality, manufacturing,…
Financial Health
WeakWeak · Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsProvides accountancy and business advisory services including auditing, bookkeeping, payroll, VAT and tax advice, corporate finance, restructuring, and cloud accounting, and support for buying or…
Serves UK businesses and organisations of varying stages, including charities, construction, health and social care, hospitality, manufacturing, professional services, property, recruitment and…
Financial Health
DistressedDistressed · 0% CAGR over 2y
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 3 filingsProvides accountancy and business advisory services including bookkeeping, audit, tax planning and compliance, payroll administration, management accounts, corporate finance advice, company…
Serves a mix of B2C and B2B clients across England and Wales, including individuals, contractors, sole traders, partnerships, limited companies and LLPs.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 2y
Location
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Computed from 5 filingsProvides audit, accounting and tax advisory services for businesses, charities and private individuals. Supports financial reporting, regulatory compliance, accounts preparation, and general…
Serves owner-managed businesses, corporates, not-for-profit organisations, private individuals and trusts, from solopreneurs to larger organisations.
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 5y
Location
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Provides audit, accounting, tax and advisory services for digital asset and blockchain organisations. Conducts financial statement audits, proof‑of‑reserves attestations and internal audits, and…
Serves B2B clients in the digital assets and Web3 sector, including crypto exchanges, market makers, foundations, DAOs, token ecosystem entities and enterprises operating onchain, with a global…
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides accountancy and business advisory services including accounting, audit and assurance, tax planning, payroll, and support for private clients and businesses. Also offers independent financial…
Serves SMEs, owner-managed businesses, charities and private clients, with sector focus on agriculture, land development, landed estates, leisure and hospitality, property and construction, and…
Financial Health
StableStable · -5% CAGR over 4y
Location
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Computed from 5 filingsProvides online accounting software and accountancy services for freelancers, contractors and small businesses, including bookkeeping, tax advice, self‑assessment filing, payroll, company accounts,…
Targets freelancers, contractors, sole traders, limited companies and small businesses, including e-commerce businesses, seeking online accountancy and tax support.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides chartered accountancy services including statutory and management accounts, bookkeeping, payroll, tax compliance and advisory, audits, and financial planning. Also advises on business…
Serves UK businesses and individuals, including start-ups and established companies, with sector focus on manufacturing, medical professions and retail, plus clients needing audit, tax, accounting…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 2y
Location
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Computed from 3 filingsProvides accountancy and business advisory services to businesses and individuals, including auditing, corporate and personal tax planning, payroll processing, VAT support, company secretarial…
Serves business owners and organisations of all sizes across the UK, with emphasis on North West businesses, regulated firms, charities and sports-sector clients; also supports individuals needing…
Financial Health
StableStable · 3% CAGR over 2y
Location
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Computed from 5 filingsProvides chartered accountancy services including accounting, audit, business and personal tax planning, bookkeeping and payroll. Also offers business advisory, crypto tax advice, wealth planning,…
Serves a mix of B2B and consumer clients: SMEs and business owners, self-employed people, landlords, crypto investors and private individuals across the South West and Thames Valley.
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
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Computed from 4 filingsProvides accountancy and financial management services for businesses and charities, including audit and accounts, payroll, tax advice, virtual finance department support, accounting software setup…
Targets SMEs, growth-stage companies, start-ups, business incubators and charities, particularly founders, finance directors and charity leaders responsible for financial operations.
Financial Health
StableStable · 2% CAGR over 3y
Location
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Computed from 3 filingsProvides chartered accountancy and business advisory services including audit, accounts preparation, tax compliance and advisory, VAT, payroll, R&D tax relief, company secretarial support, outsourced…
Serves ambitious small and growing businesses, owners and directors, primarily in Yorkshire and the UK, with sector focus on charities, not-for-profits, healthcare, rural economy, property/service…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 2y
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Computed from 3 filingsProvides accounting and business advisory services including accounts preparation, tax planning, management reporting, payroll, auditing, VAT support and corporate finance advice to businesses and…
Serves owner-managed businesses in Yorkshire, with sector focus including charities, construction, health and social care, hospitality, manufacturing, professional services, property, recruitment and…
Financial Health
HealthyHealthy · -5% CAGR over 2y
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Computed from 4 filingsDevelops online accounting software and provides accountancy services for freelancers, contractors and small businesses. Services include bookkeeping tools, tax advice, self‑assessment filing,…
Serves freelancers, contractors, sole traders, small limited companies and e-commerce businesses, including owner-directors and small business owners.
Financial Health
StableStable
Location
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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
Location
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Computed from 5 filingsProvides accountancy, audit and tax advisory services to businesses and individuals, including bookkeeping, payroll, statutory audits, tax planning and compliance, self-assessment returns, company…
Serves businesses and individuals, including hospitality firms, freelancers, contractors, construction businesses, medical professionals, expatriates and clients with UK inbound or outbound tax…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
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Computed from 5 filingsProvides accountancy and advisory services including statutory accounts preparation, independent audits, tax planning and compliance, VAT returns, payroll processing, bookkeeping, and financial…
Serves SMEs, entrepreneurs and high net worth individuals across the UK and Asia, with sector focus on retail, restaurants and bars, private investments and real estate.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 5 filingsProvides accounting, audit, tax, payroll and business advisory services to businesses and individuals. Offers outsourced finance functions, compliance support and consulting, including tax planning,…
Serves UK businesses of varied sizes, especially micro, small and medium-sized companies, as well as business owners and individuals seeking local accountancy and advisory support.
Financial Health
StableStable · -62% CAGR over 4y
Location
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Computed from 5 filingsProvides outsourced accounting and finance services for businesses, including bookkeeping, management accounts, VAT returns, payroll, annual accounts, tax compliance, financial modelling, and…
Serves ambitious UK businesses, from startups and scale-ups to established enterprises, especially owners and leadership teams wanting outsourced finance support and Xero-based accounting.
Financial Health
WeakWeak · -3% CAGR over 4y
Location
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Computed from 5 filingsProvides chartered accountancy and business advisory services including accounts preparation, audit, VAT returns, bookkeeping, payroll, and tax planning. Advises businesses and individuals on cash…
Serves businesses, business owners, trusts and private individuals across North Wales and beyond, including clients starting, managing, buying or selling businesses and those with personal tax or…
Financial Health
StableStable · -71% CAGR over 4y
Location
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Computed from 5 filingsProvides accounting, tax compliance and planning, and financial management services for businesses. Offers digital accounting systems, outsourced finance teams, company secretarial support, and…
Serves businesses, especially SMEs and growth companies needing accounting, tax and financial management support. Targets firms involved in fundraising, mergers, acquisitions, business sales and…
Financial Health
WeakWeak · -2% CAGR over 4y
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Computed from 5 filingsProvides chartered accountancy and business advisory services to owner-managed businesses, including auditing, tax planning, company accounts, payroll, financial support, and strategic business…
Serves ambitious directors of owner-managed businesses across Wakefield and Yorkshire, particularly growing firms facing management, financial or operational pressures.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides accountancy and audit services for businesses and individuals, including tax planning and self‑assessment, payroll management, financial planning, and business advisory services. Also offers…
Serves UK businesses of varying sizes, private clients and family estates, with sector focus on agriculture, charities, land development, landed estates, leisure and hospitality, property and…
Financial Health
StableStable · Hiring · 11% CAGR over 2y
Location
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Computed from 5 filingsProvides accounting and auditing services along with business advisory support for companies and individuals, including financial reporting, tax compliance, and general accountancy services. Now…
Financial Health
StableStable
Location
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Computed from 4 filingsProvides chartered certified accountancy services for businesses and individuals, including preparation of accounts, tax compliance and advisory services. Offers cloud accounting support, financial…
Serves small companies, local organisations and individual clients in Pembrokeshire, including business owners and finance staff seeking accountancy and tax support.
Financial Health
HealthyHealthy · -3% CAGR over 3y
Location
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Computed from 5 filingsProvides accounting, tax and business advisory services for small businesses, including financial reporting, tax compliance, succession planning and general business advice. Offers consultations,…
Serves ambitious owner-managed small businesses, entrepreneurs and business-owning families across Scotland, particularly those with growth, compliance, succession and personal financial planning…
Financial Health
WeakWeak · -65% CAGR over 4y
Location
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Computed from 3 filingsProvides accounting, audit and tax services, bookkeeping and payroll, business and tax advisory, personal tax, wealth, wills and probate planning, and cryptocurrency tax advice to individuals and…
Serves business owners and organisations, alongside individuals needing personal tax, wealth, wills, probate or crypto tax support.
Financial Health
StableStable · Hiring · 15% CAGR over 2y
Location
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Computed from 4 filingsProvides accounting, tax compliance, and business advisory services to farms, rural businesses, property and tourism enterprises, and private clients. Also supports digital tax reporting and cloud…
Serves farming and agricultural businesses, rural enterprises, land, property and tourism operators, general businesses, and private clients across the UK.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
Location
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Computed from 5 filingsProvides accounting and audit services, tax planning and compliance for businesses and individuals, bookkeeping and payroll, business and tax advisory, and support with wealth management, wills and…
Serves businesses and business owners needing accounting, audit, payroll and tax support, plus individual clients seeking personal tax, wealth, wills and probate advice, including self-employed…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
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Computed from 3 filingsProvides accountancy and tax services for businesses and individuals, including bookkeeping, payroll, audit, company formation, corporate tax planning, VAT support, and self‑assessment. Also advises…
Serves small and owner-managed businesses, sole traders, landlords, contractors, startups, charities and professional clients, plus individuals needing personal tax support, with in-person coverage…
Financial Health
StableStable · 0% CAGR over 2y
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Provides accountancy and tax advisory services including VAT returns, corporate and personal tax, accounts preparation, and Making Tax Digital compliance. Supports businesses, landlords and sole…
Serves local small businesses, landlords and sole traders in West Sussex and Surrey, including business owners needing accountancy, VAT, corporate tax, personal tax and Making Tax Digital support.
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Computed from 4 filingsProvides accountancy and financial advisory services for businesses and individuals, including bookkeeping, payroll, VAT and tax compliance, corporate finance, business planning, mergers and…
Serves businesses and individual clients needing accountancy and tax support, with emphasis on SMEs and owner-managed firms in construction, healthcare, care homes, property and real estate, plus…
Financial Health
StableStable · 0% CAGR over 3y
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Computed from 5 filingsProvides accountancy and tax services for businesses, including bookkeeping, financial reporting and advisory. Also offers HR support, commercial finance advice, wealth management through a regulated…
Serves businesses, particularly SMEs and growing companies, seeking accountancy, tax, HR, commercial finance and related professional support.
Financial Health
HealthyHealthy · -2% CAGR over 4y
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Computed from 5 filingsProvides accountancy and tax services for contractors, freelancers, sole traders and small businesses. Services include bookkeeping, VAT, payroll, CIS returns and refunds, tax returns, management…
Serves contractors, freelancers, sole traders and small limited companies, including self-employed workers and small business owners seeking accounting and tax support.
Financial Health
WeakWeak · -18% CAGR over 4y
Location
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Computed from 5 filingsProvides accountancy services including preparation of financial accounts, tax compliance and tax planning, VAT returns, payroll processing, and business advisory services. Supports clients with…
Serves businesses and individual taxpayers needing accountancy support, including clients in Plymouth/Devon and remote clients elsewhere.
Financial Health
StableStable · -1% CAGR over 5y
Location
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Computed from 5 filingsProvides company secretarial and corporate governance services, including Companies House filings, annual compliance, identity verification and board support. Also offers company formation,…
Serves B2B clients including funds, law firms, large corporates, financial institutions, listed and AIM-listed companies, and overseas businesses with UK company needs.
Financial Health
StableStable
Location
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Computed from 3 filingsProvides accountancy services for businesses and individuals, including bookkeeping, payroll, corporation tax, personal tax returns, VAT and CIS reporting, contractor accounting, startup support, and…
Serves businesses, contractors, startups and individual taxpayers across the North East of Scotland, spanning a diverse client portfolio with company, payroll, VAT and personal tax needs.
Financial Health
WeakWeak · 0% CAGR over 2y
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Computed from 5 filingsProvides accountancy services including bookkeeping, tax planning and compliance, payroll, and business consultancy. Assists businesses and self‑employed clients with VAT, corporation tax,…
Serves B2B small and medium-sized businesses across industries, plus self-employed professionals and business owners. Also sells to individuals needing personal tax advice and support with protecting…
Financial Health
DistressedDistressed · -10% CAGR over 4y
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How Amazon Web Services 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. accounting 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 accounting 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.
Amazon Web Services 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 accounting companies use Amazon Web Services?
What share of UK accounting companies run Amazon Web Services?
How is Amazon Web Services usage detected?
What size accounting companies use Amazon Web Services in the UK?
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