TaxAssist Accountants Swiss Cottage provides a wide range of accountancy services including tax returns, annual accounts, payroll and bookkeeping. TaxAssist Accountants in Swiss Cottage are a part of the largest network of accountants who offer a wealth of experience and expertise to over 70,000 small businesses right across the UK. We help a diverse range of small businesses including start-ups, sole traders, limited companies and landlords who operate in many industries.