Accountants for Small Businesses in London: Guide to Specialist Companies (2026)
AC
Acumon Chartered Accountants·13 min read
Small businesses in London can choose from independent local practices, digital accounting providers and larger firms with wider tax and advisory teams. This guide covers 15 firms that provide accounting support to startups, sole traders, limited companies, owner-managed businesses and SMEs in London. The list is a practical overview rather than a ranking, with attention to services, business types and local presence.
Acumon
Acumon is a UK firm of chartered accountants providing accounting services to small businesses, including bookkeeping, accounts preparation, VAT, payroll and tax planning.
The firm works with small businesses and owner-managed companies, delivering these services from its UK-based team on fixed fees. Acumon provides these accounting services for small businesses in London as well as across its other UK locations. Services are delivered by a named accountant as the day-to-day contact, with the full firm’s specialists available when needed, and with work never offshored.
Acumon supports small businesses with accurate compliance as the foundation, alongside practical advice on matters such as VAT schemes, profit extraction (salary, dividends and pensions), margins, cash flow and growth decisions. Bookkeeping is maintained on cloud platforms including Xero, QuickBooks or Sage; year-end accounts are prepared and filed on time; VAT returns are handled under Making Tax Digital; payroll is run by the firm’s CIPP-qualified team; and self-assessment is prepared for owners.
The firm’s approach is designed so that small businesses do not outgrow their accountants. As clients take on staff, premises, investment or larger contracts, the same firm can provide management accounts, audit support when thresholds are reached, and advisory input for transactions, without the need to change providers. Clients who started as sole traders or very small companies continue to be served by the same named contact as they expand.
Accounting Capabilities for Small Business:
Acumon provides external accounting services tailored to the needs of small and owner-managed businesses.
These include:
Bookkeeping kept current on Xero, QuickBooks or Sage
Annual profit-extraction reviews (salary, dividends and pensions)
Tax planning relevant to owner-managed businesses, including capital allowances and reliefs where applicable
These services are provided by one UK-based team on fixed fees agreed in advance, with deadlines managed by the firm and questions answered without hourly-rate charging.
Regulatory Licences and Registrations:
Acumon holds several audit registrations that enable it to support organisations operating across multiple jurisdictions.
These include:
UK statutory audit registration
Public Interest Entity (PIE) audit licence
Jersey audit licence
Isle of Man audit licence
Cayman Islands audit licence
British Virgin Islands audit licence
These registrations allow the firm to provide audit services to groups that include entities in both the UK and key international financial centres.
Core Services:
In addition to statutory external audit, Acumon provides a range of services that support financial reporting and governance.
These include:
Statutory external audit
Group and subsidiary audits
Public Interest Entity (PIE) audits
Charity and not-for-profit audit
Audit of international group structures
Internal audit and governance reviews
Risk management and compliance support
Audit work is often delivered alongside discussions with management and boards regarding financial reporting processes and governance frameworks.
Many organisations initially encounter statutory audit requirements as they grow and exceed the audit exemption thresholds set out in the Companies Act.
Acumon works with businesses that are:
Approaching their first statutory audit
Preparing for external investment
Expanding into international markets
Operating within corporate group structures
Early engagement with an audit firm can help ensure that financial reporting systems and documentation are aligned with statutory audit requirements.
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Accounts and Legal
Accounts and Legal works with small companies from its London office at the Hop Exchange. Its accounting service covers much of the routine financial administration a growing business may need, including bookkeeping, VAT, payroll, Corporation Tax, Companies House filings and management accounts. Businesses that need more forward-looking support can also use cash flow planning and tax advice. The firm works with businesses ranging from one-person companies to larger organisations, making it a practical option for founders who expect their accounting requirements to become more complex over time.
Key Facts:
Ideal for: Small businesses that want compliance and ongoing commercial accounting support
Additional support: Cash flow planning and tax advice
Location: South Bank, London
Client types: Small businesses, startups and established companies
Contact Information:
Website: accountsandlegal.co.uk
Phone: 020 7043 4000
Address: The Hop Exchange, 24 Southwark Street, South Bank, London, SE1 1TY
Braant Accountants
Braant has a dedicated small business accounting service and works with companies with turnover below £10 million as well as larger SMEs. Its service range includes annual accounts, bookkeeping, payroll, VAT, Self Assessment, Corporation Tax support and part-time FD or CFO services. Businesses that need more than year-end compliance can therefore add higher-level finance support without necessarily moving to another firm. Braant operates from several London locations and assigns clients a dedicated accountant, which may suit business owners who want a consistent point of contact.
Key Facts:
Ideal for: Small companies and growing SMEs requiring a broad accounting service
Core services: Annual accounts, bookkeeping, payroll, VAT and Self Assessment
Additional support: Part-time FD and CFO services
Location: Multiple London offices
Service model: Dedicated accountant and fixed pricing
Makesworth Accountants provides accounting, tax and business advisory services to SMEs, contractors and owner-managed businesses. It has a specific small business package covering bookkeeping, year-end financial statements, HMRC submissions and monthly payroll with RTI reporting. The wider practice also handles VAT, tax planning, business advice and outsourced accounting. Makesworth works with cloud platforms including Xero, QuickBooks, Sage and FreeAgent, which can be useful for companies wanting their accountant and internal team to work from the same financial data.
Key Facts:
Ideal for: Small businesses, contractors and owner-managed companies
Core services: Accounts, bookkeeping, payroll, VAT and tax planning
Cloud accounting: Xero, QuickBooks, Sage and FreeAgent
Location: Harrow, London
Additional support: Business advisory and outsourced accounting
Address: Unit 101, First Floor, Cervantes House, 5-9 Headstone Road, Harrow, HA1 1PD
Fusion Accountants
Fusion Accountants supports small businesses, startups, limited companies and sole traders across London. From its Covent Garden office, the firm provides statutory and management accounts, bookkeeping, VAT returns, payroll, Corporation Tax support and tax planning. Its service uses fixed monthly fees and gives clients a dedicated accountant as a main contact. Fusion also works with Xero and QuickBooks, making it suitable for small companies that prefer cloud-based records and more frequent access to financial information rather than relying only on year-end reporting.
Key Facts:
Ideal for: Startups, sole traders, limited companies and established small businesses
Core services: Statutory accounts, management accounts, bookkeeping, VAT and payroll
Additional support: Tax planning and business advice
Sleek takes a digital-first approach to small business accounting while maintaining a physical London presence on Regent Street. Its UK accounting services are aimed at small companies, startups, sole traders, contractors and limited companies. Depending on the package, support can include bookkeeping, year-end accounts, Corporation Tax, director tax returns, VAT, payroll and pension filings. Clients receive a dedicated UK accountant and can use cloud accounting tools including Xero and Sleek’s own platform. This structure may appeal to business owners who prefer to manage most communication and financial administration online.
Key Facts:
Ideal for: Digitally managed small businesses, startups, contractors and sole traders
Core services: Bookkeeping, year-end accounts, Corporation Tax, VAT and payroll
Service model: Dedicated UK accountant with online access
Address: 205 Regent Street, 4th Floor, London, W1B 4HB, UK
TAJ Accountants
TAJ Accountants is based in Whitechapel and works directly with small businesses, startups, limited companies and sole traders. The CIMA-regulated firm handles bookkeeping, VAT returns, payroll, Corporation Tax, Self Assessment and management accounts, alongside tax planning and business support. Its cloud accounting work covers QuickBooks, Xero and Sage. The firm’s sector coverage includes e-commerce, hospitality, technology, healthcare and independent professionals, so it may suit small businesses whose accounting includes industry-specific issues rather than straightforward annual accounts alone.
Key Facts:
Ideal for: Small businesses, sole traders, startups and limited companies
Core services: Bookkeeping, VAT, payroll, Corporation Tax and Self Assessment
Additional support: Management accounts and tax planning
Pearl Accountants provides a dedicated service for small and medium-sized businesses from its Central London office in Covent Garden. The practice works with sole traders, startups and limited companies, covering bookkeeping, VAT, payroll, tax returns, statutory accounts and Corporation Tax. Management accounts and business and tax advisory are also available for companies that need more regular reporting. Pearl uses cloud accounting platforms including Xero and QuickBooks, while its fixed pricing and dedicated accountant model are aimed at businesses wanting predictable ongoing support.
Key Facts:
Ideal for: Startups, sole traders, limited companies and growing SMEs
Core services: Bookkeeping, VAT, payroll, statutory accounts and Corporation Tax
Additional support: Management accounts and business advisory
Address: 90 Long Acre, Covent Garden, London, WC2E 9RZ
Lanop Business & Tax Advisors
Lanop works with sole traders, freelancers, startups, family-run businesses, limited companies and e-commerce sellers. Its small business accounting service covers areas such as bookkeeping, VAT, payroll, Corporation Tax, cash flow forecasting, budgeting and HMRC correspondence. The firm also sets up and supports cloud accounting through platforms including Xero and QuickBooks. With an office in Putney and a service designed for both local and remote clients, Lanop can work with companies that want a combination of compliance, tax advice and regular financial reporting.
Key Facts:
Ideal for: Sole traders, startups, family businesses, consultants and online businesses
Core services: Accounting, bookkeeping, payroll, VAT and tax compliance
Additional support: Cash flow forecasting, budgeting and HMRC correspondence
Naail & Co is a London accounting firm that explicitly provides financial support to small businesses and startups. Its service combines routine accounting and bookkeeping with tax planning, VAT, PAYE and other business tax requirements. Clients receive a dedicated accounts manager, and the firm operates on a fixed-fee basis for its ongoing work. This can suit smaller companies that want direct access to a named contact rather than dealing with different people for everyday accounting questions.
Key Facts:
Ideal for: Startups and small owner-managed businesses
Core services: Accounting, bookkeeping, VAT, PAYE and tax
Additional support: Tax planning and business support
Service model: Fixed fees and dedicated accounts manager
Nordens combines accounting and compliance with tax, cloud accounting and strategic advisory services. Its client base includes business owners across construction, technology, recruitment, professional services, property and creative sectors. Services for owner-led businesses can range from annual accounts and bookkeeping to management accounting, VAT and fractional CFO support. That broader structure makes Nordens more suited to small businesses that are beginning to require financial planning and management information alongside routine compliance.
Key Facts:
Ideal for: Established owner-led businesses looking beyond basic compliance
Core services: Accounting, compliance, tax, VAT and cloud accounting
Additional support: Strategic advisory and fractional CFO
Sector coverage: Technology, recruitment, construction, professional services and other owner-managed sectors
Barnes Roffe concentrates heavily on owner-managed businesses, including established SMEs. Its work spans accountancy, accounts support, payroll, tax compliance, specialist tax, audit and corporate finance. Barnes Roffe maintains several offices around London, including a City office at Tower 42, and can provide broader advisory and transaction support as a business grows.
Key Facts:
Ideal for: Established owner-managed businesses and growing SMEs
Core services: Accountancy, payroll, tax compliance and audit
Additional support: Corporate finance and specialist tax
Menzies has a substantial London practice and works with SMEs alongside larger corporate clients. Small and medium-sized businesses can access accounts, tax planning and compliance, outsourced finance services and strategic advisory, while specialist teams cover areas such as technology, retail, property and construction. The wider service range also includes audit, payroll, deal advisory and international support. Menzies is therefore more relevant to small businesses with increasingly complex structures, employees, investors or international activity than to owners seeking only a straightforward annual tax return.
Key Facts:
Ideal for: SMEs with more complex accounting, tax or growth requirements
Core services: Accounts, tax, payroll and compliance
Additional support: Outsourcing, strategic advisory, audit and deal advisory
Sector coverage: Technology, retail, property, construction, hospitality and other industries
Address: 4th Floor, 95 Gresham Street, London EC2V 7AB
Phone: +44 (0)20 7387 5868
Gerald Edelman
Gerald Edelman works with businesses ranging from startups and small companies to established SMEs and larger organisations. Its accounting and bookkeeping team can handle day-to-day records, VAT, year-end financial statements, tax reporting, payroll and management information. Small businesses can also access tax planning and strategic advice when they need more than basic compliance. The firm separately supports startups, sole traders, freelancers and contractors, so its services cover several common structures used by London small businesses. Gerald Edelman operates from a City of London office on Cornhill.
Key Facts:
Ideal for: Startups, sole traders and established SMEs needing access to wider advisory expertise
Core services: Accounting, bookkeeping, tax reporting, VAT and payroll
Additional support: Management reporting, tax planning and strategic advice
Client types: Small businesses, startups, freelancers, contractors and larger companies
Moore Kingston Smith is a larger accounting and advisory firm with a long-standing focus on owner-managed and entrepreneurial businesses alongside larger organisations. Services available to growing companies include outsourced accounting, payroll, business and corporate tax, audit, business growth support and corporate finance. Its broader advisory capability can be useful once a smaller company reaches the point where finance operations, tax structuring or expansion require several specialist teams. The firm has multiple offices, including a City of London location on Appold Street.
The firms covered here differ considerably in how they work with small businesses. Some focus on fixed-fee packages, cloud bookkeeping and everyday compliance for startups and sole traders. Others are structured around established SMEs and owner-managed companies that also need management reporting, tax planning, audit, corporate finance or outsourced finance support.
There is no single firm that suits every London small business. A very small company may place more value on predictable monthly fees and direct access to a dedicated accountant, while a growing business may need broader tax and advisory expertise. The useful comparison is therefore not just the list of services, but how closely each firm’s client focus and level of support match the business’s current stage, budget and plans.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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