Philip Clifford has a background in structural engineering and progressed into architectural design as a freelance architectural technician, became a member of the Architects & Surveyors Institute and progressively expanded to become Philip Clifford Design Architectural & Engineering Consultants in 1994.

Philip Clifford Design has been registered as a partner company with Bristol City Council, under the LABC Partner Authority Scheme since 2007, and is currently listed under the Bristol City Council and the Bath and North East Somerset Council Planning Departments Accredited Agent Schemes.

The practice has now designed over 3,000 loft conversions and house extensions in and around Bristol and Bath.