R&D tax and patent box accountants

How this list is built

The Chartered Institute of Taxation (CIOT) and the Association of Taxation Technicians (ATT) publish a Find-a-Member register in which each adviser records the tax areas they specialise in. We match those members to the practice they run through its Companies House officers, so this is the firm's principal, not an employee on a shared corporate domain. A listing here means a qualified tax adviser at the firm names r&d and patent box as a specialism - it is not a ranking or a recommendation.