	Barfield has served as an awards assessor for RIBA and the [[Civic Trust (England)|Civic Trust) and judges architectural competitions.She lectures at conferences and universities, advises for the Interdisciplinary Design for the Built Environment masters course at [[University of Cambridge|Cambridge University]], and serves as a governor at [[Godolphin and Latymer School|Godolphin & Latymer School]] for girls. She previously served as vice president of the [[Architectural Association School of Architecture]].