Accountants for Contractors in London: Guide to Specialist Companies (2026)
AC
Acumon Chartered Accountants·12 min read
Contractors in London often need more than standard year-end accounting, particularly when working through a limited company, moving between inside and outside IR35 contracts, or managing VAT and payroll obligations. This guide covers a selection of accountants for contractors in London, including firms with London offices and UK-wide providers that work remotely with London-based contractors. The list is intended as a practical comparison rather than a ranking.
Acumon
Acumon is a UK firm of chartered accountants providing specialist accounting services for contractors and their limited companies.
The firm works with contractors operating through limited companies, supporting compliance, IR35 status, payroll, VAT and profit extraction. These services are delivered on a fixed monthly fee and are available in London as well as across the UK through Acumon’s UK-based team. Contracting through a limited company involves company accounts, corporation tax, VAT, payroll and self assessment, alongside IR35 considerations that affect take-home pay and require proper documentation.
Acumon handles the full range of requirements for contractor limited companies. This includes statutory accounts and corporation tax, VAT returns (with the flat rate scheme assessed against actual costs), payroll and RTI for salary, dividend paperwork, and self assessment reconciled to the company position. Cloud bookkeeping keeps records current, supported by a named UK-based accountant.
IR35 support forms a core part of the service. Where clients determine status, the firm helps scrutinise and challenge incorrect determinations. Where the decision rests with the contractor, contracts and working practices are reviewed against the relevant tests (substitution, control, mutuality of obligation) and the position is documented. Inside-IR35 engagements are also managed correctly, including the comparison of umbrella arrangements versus deemed payments through the limited company, particularly for mixed portfolios.
Profit extraction is structured legitimately: salary set against National Insurance thresholds, dividends timed across tax years (and spouses where shareholdings allow), pension contributions that convert corporation tax into retirement savings, and appropriate VAT scheme choice. These settings are reviewed annually as rules change. The firm also supports retained-profit planning between contracts and exit planning, including members’ voluntary liquidation with Business Asset Disposal Relief where conditions are met.
Contractor Accounting Capabilities:
Acumon provides accounting services for contractors across a range of situations.
These include:
Limited company accounts, corporation tax, VAT, payroll and self assessment on a fixed monthly fee
IR35 contract and working-practice reviews with reasoned documentation
Scrutiny and challenge of client status determinations where appropriate
Annual salary, dividend and pension optimisation
Honest assessment of the flat rate VAT scheme against actual costs
Umbrella versus limited company arithmetic for inside-IR35 engagements
Retained-profit and cash planning between contracts
Wind-up and Business Asset Disposal Relief support when contracting ends
These services are delivered by Acumon’s 100% UK-based team, including dedicated employment tax and IR35 specialists (several with prior HMRC experience) and a CIPP-qualified payroll team.
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
Integro Accounting
Integro Accounting focuses on contractors, freelancers and consultants operating through limited companies. Its contractor package covers statutory accounts, Corporation Tax, personal Self Assessment, VAT returns, payroll and dividend planning, alongside ongoing specialist support. FreeAgent is used as the accounting platform.
Integro is particularly relevant to this list because it has a London office in the City, at Guildhall Yard near Gresham Street. Remote meetings are also available, so contractors are not limited to face-to-face support.
Key Facts:
Ideal for: Limited company contractors wanting access to a London office
Address: Blackwell House, Guildhall Yard, Gresham Street, London EC2V 5AE
The Accountancy Partnership
The Accountancy Partnership works with limited companies, sole traders, contractors and small businesses through an online accounting model. Contractors can use its accountants for annual accounts, tax returns, deadline management, tax efficiency reviews and general accounting support. The service also incorporates its Pandle bookkeeping platform.
Unlike many nationwide online firms, The Accountancy Partnership also maintains a London office at City Reach in E14. This gives London contractors the option of working with a digitally oriented provider that also has an established physical presence in the city.
Key Facts:
Ideal for: Contractors comfortable with online accounting and ongoing accountant access
Core services: Annual accounts, tax returns, bookkeeping and tax planning
Software: Pandle
Location: London office and Wirral office
Support model: Dedicated accountant with phone, email and video contact
Address: Suite 5, 5th Floor, City Reach, 5 Greenwich View Place, London, E14 9NN
SG Accounting
SG Accounting has worked with professional contractors and small businesses. Its contractor accounting service includes a personal accountant, FreeAgent, tax advice and support with limited company setup and Companies House and HMRC filings. The firm also provides IR35 guidance and operates an umbrella service for contractors whose working arrangements change.
SG operates from several UK locations, including London, Winchester, Southampton and Bournemouth, while also supporting contractors remotely by phone, email and video call.
Key Facts:
Ideal for: Contractors wanting specialist limited company support and access to umbrella services
Core services: Limited company accounts, tax advice, company setup and filings
Contractor support: IR35 advice and umbrella payroll
Software: FreeAgent
Location: Offices include London, Winchester, Southampton and Bournemouth
Contact Information:
Website: sg-accounting.co.uk
Phone: 01962 896968
Facebook: www.facebook.com/sgcontractoraccounting
Twitter: x.com/sgaccountants
LinkedIn: www.linkedin.com/company/sg-accounting
Instagram: www.instagram.com/sg_accounting
Address: 1 Cedar Office Park, Cobham Road, Wimborne BH21 7SB
Churchill Knight & Associates has focused on contractor accountancy. Its services include limited company accounting, CIS limited company accounting, personal tax returns and support for other small business structures. The company has specifically promoted its services to contractors working in London as well as elsewhere in the UK.
Its contractor background may be useful for professionals who need an accountant familiar with the practical differences between permanent employment, limited company contracting and other working arrangements. The current office address published by the company is in Reading.
Key Facts:
Ideal for: Professional contractors and freelancers using limited companies
Core services: Limited company accounting, personal tax and CIS company accounting
Contractor focus: Operating in the contractor market
Address: Quadrant House, Broad Street Mall, Reading, RG1 7QE
PaperRocket Accounting
PaperRocket Accounting is a chartered accountancy firm working with contractors, freelancers, landlords and small businesses throughout the UK. Contractor and freelancer services sit alongside its limited company packages, which include access to a dedicated accountant and FreeAgent.
The firm’s offices are in Welwyn Garden City and Aylesbury, placing part of its operation relatively close to London while its services are available nationally. Its smaller-team model may appeal to contractors who prefer a more personal relationship with the people managing their accounts.
Key Facts:
Ideal for: Contractors looking for a smaller accountancy team
Core services: Limited company accounting, tax planning and ongoing director support
Software: FreeAgent included with limited company packages
Coverage: Contractors and freelancers across the UK
Address: Crown House, 27 Old Gloucester Street, London, WC1N 3AX
Caroola
Caroola provides specialist accountancy for contractors, freelancers, self-employed professionals and small businesses. Contractor services include limited company accounting, bookkeeping, VAT management, year-end filings and support from a dedicated accountant. FreeAgent is available as part of its accountancy offering.
The firm works nationally and offers contractor-focused accounting across different professional sectors. It may be particularly useful for contractors who want a larger specialist provider rather than a traditional local practice.
Key Facts:
Ideal for: Contractors looking for a national specialist provider
Core services: Limited company accounts, bookkeeping, VAT and year-end filings
Gorilla Accounting concentrates on accounting for contractors, freelancers, limited companies, sole traders and other self-employed professionals. Its limited company contractor package combines accounting and tax work with FreeAgent, bookkeeping reviews and ongoing support from a dedicated accountant.
The company is headquartered in Bolton and works with contractors throughout the UK, so London clients primarily use its remote service model. This can suit contractors who value online accounting and regular accountant access more than having a practice close to their workplace.
Key Facts:
Ideal for: Contractors comfortable with remote accountancy
Core services: Limited company accounting, tax planning, bookkeeping reviews and company formation
Software: FreeAgent and Xero options
Support: Dedicated accountant
Location: Head office in Bolton, serving UK clients
Address: Belmont Suite Paragon Business Park Chorley New Road Horwich Bolton BL6 6HG
Phone: 0330 107 9676
Dolan Accountancy
Dolan Accountancy is a nationwide specialist serving contractors, freelancers, small businesses and other self-employed professionals. Its contractor package includes a dedicated accountant, FreeAgent and support covering both business and personal tax requirements. Services include company accounts, personal tax returns, VAT, payroll, Corporation Tax, dividend advice and IR35 status reviews.
The company is based in Tring but works with contractors throughout the UK. For London professionals who do not require meetings in central London, it provides a contractor-specific alternative to general accountancy practices.
Key Facts:
Ideal for: Contractors wanting a nationwide contractor specialist
Core services: Company accounts, Corporation Tax, VAT, payroll and personal tax
Contractor support: IR35 status reviews and dividend advice
Clever Accounts provides online accounting for contractors, limited companies and other self-employed professionals. Its dedicated contractor service combines standard company accounting with extensive IR35 support, including contract reviews, working-practice assessments and written IR35 opinions. It also offers a system for contractors who need to move between their personal service company and umbrella employment. The accounting side covers year-end accounts, Corporation Tax, VAT, director payroll, dividends, Companies House filings and Self Assessment.
Contractor support: Contract reviews, working-practice assessments and IR35 guidance
Software: FreeAgent
Location: Leeds, providing online accounting throughout the UK
Contact Information:
Website: cleveraccounts.com
Phone: 0113 518 8800
Adroit Accountax
Adroit Accountax provides specialist accounting services for contractors and limited company professionals. Its contractor offering covers bookkeeping, payroll, tax returns, financial planning, VAT and general limited company accounting, alongside dedicated IR35 support. The firm works with both contractors and freelancers across different industries.
IR35 is treated as a separate area of expertise rather than an occasional add-on. Adroit provides contract reviews and guidance for contractors who need to understand how their working arrangements may affect their tax position. Its physical London presence makes it a particularly direct fit for this article.
Key Facts:
Ideal for: Limited company contractors and freelancers in London
Core services: Bookkeeping, payroll, tax returns, VAT and financial planning
Contractor support: IR35 advice and contract reviews
Location: Surrey Quays, London
Professional status: ACCA-approved accountancy practice
Address: Unit 8-12 Dock Offices, Surrey Quays Road, London SE16 2XU
Chris Syrimis & Co
Chris Syrimis & Co is an ACCA-registered accountancy firm based in central London with a dedicated service for contractors. It works with professionals in areas including IT, engineering, management consulting and creative work, supporting both limited company contractors and people working through umbrella arrangements.
Its contractor service covers company formation, annual accounts, Corporation Tax, Companies House filings, director payroll, dividend planning, Self Assessment and VAT. IR35 and Off-Payroll Working contract reviews are also included, while bookkeeping can be managed through FreeAgent, Xero or QuickBooks. Contractors who prefer meeting an accountant rather than handling everything remotely can use its central London office.
Key Facts:
Ideal for: IT, engineering, consulting and creative contractors
Bayar Hughes & Co is a London accountancy firm that works specifically with contractors and freelancers alongside its wider business accounting services. Based in New Eltham, the practice supports contractors running limited companies and provides assistance with the tax and administrative questions that commonly arise around contracting.
Its contractor service includes limited company compliance, Corporation Tax, payroll, VAT returns, director remuneration planning and IR35 support. The firm reviews contractor status and working arrangements while also handling annual accounts and Companies House requirements. Services are available both in person and online.
Key Facts:
Ideal for: London contractors and freelancers running limited companies
Core services: Company accounts, Corporation Tax, VAT, payroll and company filings
Contractor support: IR35 reviews and employment-status guidance
Address: Unit 4 Green Lane Business Park, London SE9 3TL
RSBC Accountants
RSBC Accountants operates from Raynes Park in London and provides a dedicated accounting service for contractors and freelancers. The firm works with limited company contractors as well as self-employed professionals, combining ongoing accounting with support around the tax and compliance issues associated with contract work.
For contractors, its services cover company formation, payroll, VAT returns, Corporation Tax, annual accounts and Companies House filings. IR35 guidance forms a clear part of the offering, including support with contract status and working-practice considerations. The firm also provides bookkeeping and tax planning for London-based contractors.
Key Facts:
Ideal for: Contractors and freelancers wanting a London-based accountant
Core services: Annual accounts, Corporation Tax, bookkeeping, payroll and VAT
Contractor support: IR35 guidance and limited company compliance
Additional support: Company formation and director remuneration planning
The accountants for contractors London businesses and independent professionals can consider range from established London practices to nationwide firms built specifically around contractor accounting. Their services commonly cover limited company accounts, Corporation Tax, VAT, payroll and personal tax, but the level of IR35 support, software integration and access to specialist advisers varies considerably.
Contractors who want in-person meetings may prefer firms with a physical London office, while those comfortable working remotely have a wider choice of specialist providers across the UK. The right option depends on the contractor’s company structure, IR35 exposure, preferred accounting software, level of ongoing advice and need for services beyond standard annual compliance.
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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