Established in 1925, Duncan & Toplis is an accounting and audit firm based in Grantham, United Kingdom. The firms act as auditors, accountants, and tax advisers, providing services such as bookkeeping, tax returns, corporate tax advice, annual and management accounts, audit, payroll, and HR. The firm caters typically to SMEs, family-run businesses, and private individuals in sectors including agriculture, academies, caravan parks, food, haulage and logistics, medical, property and construction, and renewables.