Carbon Accountancy Limited
Chartered Accountants
80–83 Long Lane
London EC1A 9ET

John Leyden


John is the Director of Carbon Accountancy, qualified as a Chartered Accountant in 1989 and then spent 7 years with KPMG.

John has considerable experience in all areas of the firm’s services and specialises in particular in business advice, tax planning and enquiries, corporate finance, due diligence and share option schemes.

John acts as a part time finance director for a number of companies backed by venture capitalists and business angels. Since qualifying as a Chartered Accountant, John has been involved in approximately 50 fund raisings, 35 acquisitions and 20 disposals of businesses as well as resolving shareholder disputes and business valuations.

John has considerable experience in dealing with HMRC enquires including tax fraud cases.

Muhammad Ali

Practice Manager

Muhammad is the Practice Manager and qualified as a Chartered Certified Accountant in 2011.

Muhammad has considerable experience of audit, accounts and tax and specialises in R&D tax credits. Muhammad has achieved significant refunds for clients with R&D tax credit claims and has considerable experience in dealing with HMRC on behalf of clients.

Ann Stainer

Office Manager

Ann joined the firm in 2010 and specialises in Company Secretarial and Payroll.

Ann can assist with Company Formation as well as day to day company secretarial matters, including resolving problems with Companies House where information has been incorrectly filed by companies in the past or incorrectly processed by Companies House.

In relation to payroll, Ann will ensure that the payroll is produced in a timely manner and that you are kept fully informed of the amount to pay HMRC and when to pay. Ann has considerable experience in dealing with HMRC where issues arise over payroll.