Keith is a Senior Partner with Feilden Clegg Bradley Studios, based in London and Bath. He joined the practice in 1987, he was made a Partner in 1995, a Senior Partner in 1997 and in 1998 he set up the London office. Keith is a Chair of the Design Council CABE National and London Design Review Panels and a Trustee of Shape East, Centre for Architecture and the Built Environment, Cambridge.

Keith has led numerous FCBS Award winning projects which have included 30 RIBA Awards, the Queen's Award for Sustainability and the 2008 RIBA Stirling Prize. Keith has managed award winning high-density urban housing and major urban regeneration schemes throughout the UK, with ongoing work in London, Manchester, Leeds, Bristol and Bath. Keith's public buildings portfolio includes London Academies and two buildings for the RAF Museums. Recently completed projects include the new Business School and Student Hub for Manchester Metropolitan University, along with their new School of Art and Design which is currently on site. Keith is also currently leading the design for a major new 170 million urban campus for the University of Ulster in Belfast.

Keith is a guest critic and lecturer at numerous Schools of Architecture in the UK and a frequent speaker at conferences in the UK and abroad particularly on urban regeneration and sustainable communities. Keith's projects are widely published in books and magazines, and he is a regular contributor to other publications and industry journals.