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Accountancy Companies in Southampton: 425 Active Firms (2026)
Accountancy companies in Southampton provide bookkeeping, tax, reporting and audit services to local employers and regional clients.
Buying centres tend to sit with owner-managers, finance directors, trustees and practice administrators rather than central procurement teams. Work is usually local and recurring: bookkeeping, payroll and tax compliance retainers; annual accounts and corporation-tax cycles; management reporting for growing SMEs; and audit files where a statutory audit threshold or grant condition makes assurance work necessary. Southampton demand also has a port and property skew, so practices often combine general SME advice with sector-specific reporting habits for marine-linked, real-estate, charity and professional-services clients across the surrounding metropolitan area.
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Southampton has 425 actively trading accountancy companies, giving researchers a local-market cohort rather than a national practice census. Reported headcount across the cohort totals 538 people, which points to a market made up mainly of small local offices with a thinner layer of higher-turnover practices. Only 2 sit above the £5M turnover marker, while 50 were incorporated since 2022. That newer-company count suggests some continuing practice formation, but the revenue profile remains weighted towards owner-managed and partner-led firms serving nearby SMEs, charities, property businesses and professional-services clients.
Statutory audit sits inside a defined UK supervisory structure, so Southampton practices that offer audit work operate differently from bookkeeping-only or tax-compliance practices. The FRC is the Competent Authority for public supervision under the Statutory Auditors and Third Country Auditors Regulation. Registration and monitoring run through Recognised Supervisory Bodies including ACCA, Chartered Accountants Ireland, ICAEW and ICAS. Audit qualifications sit with Recognised Qualifying Bodies including ACCA, ICAEW, Chartered Accountants Ireland, ICAS and AIA. The wider profession also spans CIMA, CIPFA and AAT, making credentials, quality-control files and audit eligibility relevant filters for local supplier review.
Local accountancy demand appears likely to stay tied to recurring compliance work, with advisory and management-reporting services added where clients want more regular finance visibility. Scale-up scarcity means many practices may remain partner-led rather than moving into branch-based regional consolidation, although audit regulation and quality-control costs tend to favour firms with more process depth. Cloud workflows and client portals have been absorbed as operating hygiene rather than a point of distinction. The sharper divide is likely to sit between generalist compliance practices and those able to evidence sector knowledge in charities, property, marine-linked trade or professional services.
425
Active firms
2026
2
Above £5M turnover
Southampton accountancy firms
50
Incorporated since 2022
Recent Southampton entrants
Key facts
About 1% of the trading cohort reports turnover above £5M (2 of 425 firms) — the rest sits below that revenue band.
11% of the cohort was incorporated since 2022 (50 firms), so a sizeable share is in its first few filing cycles.
Statutory audit is a regulated activity, with the FRC designated as Competent Authority under the Statutory Auditors and Third Country Auditors Regulation 2016.
UK statutory auditors and audit firms are registered and supervised through four Recognised Supervisory Bodies.
Registered statutory audit firms fell to 3,760 in 2024 from 5,007 in 2020, a 24.9% decline over five years.
Five Recognised Qualifying Bodies can offer the Audit Qualification, shaping the formal route into statutory audit work.
The surveyed accountancy bodies had more than 408,000 members in the UK and Republic of Ireland, compared with more than 623,000 worldwide.
Top Southampton Accountancy companies
Basra & Basra Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting, auditing and tax advisory services for individuals and businesses. Offers self‑assessment tax returns, business accounting, financial reporting, tax planning, and advice for…
Serves a mix of private individuals and small, medium and large businesses, including VAT-registered firms and clients needing specialist support, primarily in Southampton and Hampshire.
Financial Health
StableStable · 0% CAGR over 2y
Location
T D Gregory Office Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -7% CAGR over 4y
Location
MUHASEBECIM UK LIMITED
Trajectory
4y · 2023–NowFinancial Health
Insufficient historyInsufficient history
Location
Taxpage Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
FIANDER TOVELL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -35% CAGR over 4y
Location
Roger Smallman & Co Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy services to businesses and individuals, including tax planning and compliance, VAT support, bookkeeping, payroll processing, financial accounting, and advice on Making…
Serves businesses and individuals in Southampton, including business owners, employers, VAT-registered firms, CIS contractors and personal tax clients.
Financial Health
DistressedDistressed · -13% CAGR over 4y
Location
HJS ACCOUNTANTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy, tax and business advisory services for businesses and individuals, including bookkeeping, payroll, management accounts, cloud accounting support, self‑assessment, personal tax…
Serves owner-managed businesses at start-up, growth and succession stages, plus individuals and families with personal finance needs, across a range of trades and industries in the UK.
Financial Health
StableStable · -67% CAGR over 4y
Location
Business Accounting and Tax Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
PAPERTRAIL BOOKKEEPING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides bookkeeping and accountancy services for contractors, subcontractors and small businesses, including CIS administration, VAT returns, payroll, self‑assessment tax returns and general…
Serves contractors, subcontractors, tradespeople, sole traders and small businesses, with a focus on the construction industry in Southampton and surrounding Hampshire areas.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
AZTAX CONSULTING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
J & L Finance Management Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and tax advisory services to small businesses and individuals, including preparation of year-end accounts, bookkeeping, VAT returns, payroll processing, corporation and…
Serves UK small businesses and independent business owners, including sole traders, partnerships, limited companies, contractors, CIS contractors and landlords, plus self-employed and employed…
Financial Health
HealthyHealthy · -8% CAGR over 4y
Location
JSR MANAGEMENT & HR CONSULTANCY SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 50% CAGR over 4y
Location
Do the Numbers Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
J & S Accountants Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and tax advisory services for individuals and businesses, including preparation of business accounts, payroll and VAT returns, company secretarial support, business start‑up…
Serves a mix of businesses and individuals, including sole traders, start-ups, small companies, larger enterprises, medical specialists and hospitality businesses, mainly seeking accountancy and tax…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
JJ ACCOUNTS AND BOOKKEEPING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
TRUSOLV LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -68% CAGR over 4y
Location
Rowles Accountancy Services Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
HK Accountancy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -10% CAGR over 4y
Location
MRTAXMAN LIMITED
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
tdgaccountancy Ltd
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable
Location
A & M MANDAIR LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accounting and tax advisory services for individuals and businesses, including self‑assessment tax returns, corporation tax and VAT returns, bookkeeping, payroll processing, and tax planning…
Serves individuals, self-employed professionals, freelancers and businesses in Southampton, including companies needing support with tax, VAT, payroll and financial management.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
Infinite Accountancy Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable
Location
Mandair & Co.
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy services to individuals and businesses including bookkeeping, payroll administration, preparation of financial accounts, and tax return filing. Also advises…
Serves businesses and individuals across the South of England, including sole traders, start-ups, social clubs, partnerships and limited companies needing accountancy and tax support.
Financial Health
StrongStrong · Hiring · 5% CAGR over 6y
Location
Graham Harvey & Co Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -11% CAGR over 4y
Location
Thomas Croft Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accountancy and taxation services for individuals and businesses, including tax planning and compliance, financial accounts preparation, and general business support. Also offers advisory…
Serves individuals, families and businesses seeking accountancy, taxation and business support services, including clients wanting outsourced financial advice rather than in-house provision.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 2y
Location
Bunthon Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
HOPPER WILLIAMS & BELL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting, audit and assurance, and tax advisory services to businesses and individuals. Offers payroll, VAT returns, self‑assessment, corporate finance, company secretarial support,…
Serves businesses, charities, academies and individuals in Southampton and Hampshire, with sector focus on architects, healthcare, legal, logistics, property, recruitment, travel and FCA-regulated…
Financial Health
WeakWeak · -3% CAGR over 2y
Location
HYSONS ACCOUNTANTS LLP
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting and tax advisory services for businesses, charities and individuals, including audit and assurance, bookkeeping, payroll, VAT and company tax returns, financial forecasting,…
Serves private individuals, charities and not-for-profits, start-ups, owner-managed businesses and corporate companies in and around Hampshire.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
GIBSON WHITTER LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accountancy and tax advisory services including audit, bookkeeping, management accounts, payroll, tax compliance and planning, VAT advice, cloud accounting support, business valuations,…
Serves business owners, legal practices, medical and healthcare organisations, charities and social enterprises seeking accountancy and tax support.
Financial Health
StableStable · 4% CAGR over 2y
Location
Winchester Bourne Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accounting and business advisory services for businesses, charities and individuals, including preparation of annual accounts, business and personal tax planning, payroll and outsourced…
Serves businesses large and small, new businesses, charities and individuals in Winchester, across Hampshire and beyond.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Kara Accountants Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and financial management services for businesses, including management accounts, statutory accounts preparation, bookkeeping, payroll, tax self‑assessment, forecasting and…
Serves small and owner-managed businesses in Hampshire, as well as local business owners and individuals needing self-assessment tax support.
Financial Health
DistressedDistressed · -14% CAGR over 4y
Location
DAVID SHORES & CO LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides chartered accountancy and business advisory services including preparation of annual accounts and financial reports, personal and corporate tax returns and planning, payroll and CIS, VAT and…
Serves individuals, self-employed professionals, and small and large businesses in the New Forest, Hampshire and across the UK seeking accountancy and tax support.
Financial Health
StableStable · -3% CAGR over 3y
Location
ROTHMANS AUDIT LLP
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting, audit and tax advisory services to businesses and individuals. Services include annual accounts preparation, bookkeeping, payroll, VAT, tax planning, business planning, company…
Serves individuals, business owners, managers and directors, from start-ups and family-run firms to multinational organisations, alongside charities, not-for-profits and international clients.
Financial Health
StrongStrong
Location
Rothmans
Trajectory
2y · 2023–NowProvides accounting, audit and tax advisory services to businesses and individuals. Services include annual accounts, bookkeeping, payroll, VAT, tax planning, business valuations, due diligence,…
Serves business owners, managers and directors, personal clients, charities and not-for-profits, and international organisations, from start-ups and family-run companies to multinationals.
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides accounting and tax services for businesses and individuals, including bookkeeping, VAT returns, payroll processing, tax planning and compliance, management advice, and company secretarial…
Serves companies, sole traders and individuals across Southampton and the South Coast, mainly business owners seeking accountancy and tax support.
Financial Health
StableStable
Location
Argus Accounting Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
DIAMOND ACCOUNTING (SOUTHERN) LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy services including bookkeeping, payroll processing, VAT returns, management accounts, and tax compliance. Also offers business advisory and financial coaching, with specialist…
Serves startups, SMEs and larger corporations across Hampshire and the UK, with a particular focus on hospitality businesses such as hotels, restaurants, bars and venue operators, alongside clients…
Financial Health
StrongStrong · Hiring · 33% CAGR over 4y
Location
ROTHMANS LLP
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting and tax advisory services to businesses and individuals, including audits, bookkeeping, payroll, VAT, tax planning, estate planning, business valuations, due diligence, mergers…
Serves a mix of businesses, private individuals, charities and not-for-profit organisations, including business owners, managers, directors, solicitors and international clients.
Financial Health
WeakWeak · -19% CAGR over 2y
Location
ALEXANDER VAUGHAN LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and tax advisory services for businesses and individuals, including bookkeeping, management accounts, payroll, VAT returns and tax planning. Advises on R&D tax credits, corporate…
Serves individuals and businesses seeking accounting, tax, payroll and advisory support, with specific emphasis on small businesses using Xero and companies needing corporate finance, R&D tax credit…
Financial Health
StableStable · -7% CAGR over 4y
Location
KNIGHT GOODHEAD LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides chartered accountancy services including statutory audits, tax planning, financial reporting and business advisory. Supports small and growing businesses, startups and charities with…
Serves businesses of varied types, start-ups and charities, targeting business owners, finance leaders and charity trustees needing chartered accountancy support.
Financial Health
StrongStrong · Growing · 0% CAGR over 5y
Location
Crawford Accountants Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business accountancy services including preparation of accounts, bookkeeping, tax planning and compliance, VAT returns, and payroll processing, along with financial advice to help businesses…
Serves owner-managed and growing businesses of varying sizes near Portsmouth and across Hampshire, with a focus on business clients seeking regular accountancy support.
Financial Health
StableStable · 0% CAGR over 4y
Location
THE ACCOUNTING STUDIO (CONSULTING) LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
KS Accountancy & Taxation Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides accountancy and tax services to individuals and businesses, including bookkeeping, accounts preparation, VAT returns, payroll administration, corporate and personal tax returns, tax…
Serves individuals and local businesses around Winchester, including sole traders, partnerships, LLPs, limited companies, landlords, trusts, and personal tax clients.
Financial Health
StableStable
Location
Ledger Accounting Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accounting and bookkeeping services for small and medium-sized businesses, including VAT returns, tax services, payroll, financial accounts, management accounts, cash flow forecasting, cloud…
Serves small and medium-sized businesses and business start-ups, including employers, VAT-registered firms and construction-sector businesses subject to CIS.
Financial Health
StrongStrong · Hiring · 47% CAGR over 2y
Location
DNA Accountancy Services Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 5y
Location
KUMAR ASSOCIATES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · Hiring · 5% CAGR over 2y
Location
Meon Valley Accounting Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
EJW ACCOUNTANTS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · 0% CAGR over 3y
Location
K3 Accountants Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
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How Southampton Accountancy companies work and how to sell to them
What they do
Revenue is usually a mix of fixed monthly retainers, annual compliance fees and project work. Bookkeeping, payroll and management accounts lend themselves to recurring subscriptions, with fees tied to transaction volume, payroll complexity, entity count and reporting cadence. Statutory accounts and corporation-tax work are commonly priced as annual fixed-fee engagements, while audit and assurance work carries more partner review, risk assessment and file evidence, so scope changes can move the price. Advisory services sit around cash-flow modelling, systems clean-up, tax planning and management reporting. Delivery is still service-led rather than product-led, although portals, workflow tools and template reporting shape how margins are protected.
Who they sell to
Most buyer relationships are direct and local, with referral networks, accountant changes and compliance deadlines doing more work than formal lead generation. Typical customers are owner-managed SMEs, charities, property businesses, marine-linked traders and professional-services firms that need accounts, payroll, tax compliance or audit sign-off. The economic buyer is usually an owner-manager, finance director, trustee group or practice administrator; larger clients may involve a board, audit committee or Head of Procurement, but central purchasing is not the norm. Smaller retainers can close after a qualification call and document review, while audit appointments and charity tenders usually take longer because credentials, timetable fit and independence need checking.
What they buy
Spending tends to centre on tools that reduce unbilled administration and improve client evidence gathering. Most practices buy practice-management software, workflow automation, client portals, document storage, e-signature, billing, time recording, payroll processing, reporting packs and secure communications. Firms with audit work also tend to need file-review systems, quality-control processes, training, credential tracking and evidence retention that fit FRC-supervised expectations and the requirements of their Recognised Supervisory Body. Outside software, common supplier categories include outsourced IT support, cyber security, recruitment for qualified finance staff, professional training, office services and marketing aimed at local search and referral conversion. Sellers should expect partner scrutiny on recoverability and ease of adoption.
Why and how to sell to them
Buying intent often appears when partners are dealing with deadline bunching, fee pressure, audit-quality reviews, staff shortages or a rise in clients asking for more frequent management information. Commercial triggers include a new service line, a practice merger, a partner succession event, a move into audit, payroll or outsourced finance, or a client base shifting towards charities, property and marine-linked work. Useful outbound angles tend to be specific: fewer status-chasing emails, cleaner evidence trails, faster month-end reporting, better utilisation visibility, or less manual rekeying across systems. Southampton practices are likely to respond better to proofs around small-office adoption and client service than to broad claims about scale.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. 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.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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Frequently asked questions
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