Jon Allen has nearly twenty years general architectural experience. After working in The Oxford Architects Partnership, he spent six years at Triad Architects & Planners in London working as project architect and then associate on a range of projects including educational, sheltered and private housing, office and hotel developments. He also worked on the Sathya Sai Hospital in association with Ann Noble Architects. He has worked with Keith Critchlow Associates on a wide variety of built projects, design work, feasibility and research studies. In the same period he has pursued other interests including teaching and research, as well as working on a number of projects with Ann Noble Architects. He lectured at the Prince of Wales Institute of Architecture from 1990 - 1999 and was a Research Co-ordinator there for four years.

Working within Ann Noble Architects since 2001, he has been the project architect for primary care and health centre developments, facilitated New Ways of Working Workshops and had a key role in the NHS research project, Reduction of Hospital Acquired Infection by Design, submitted in 2003.