Buck started her career at Freeman Fox & Partners in Exeter in 1975, followed by stints at Teignmouth District Council from 1976 to 1980; John Burrow and Partners (renamed DHV in 1991) from 1980 to 1993; and Bolgar Sykes White in Torquay from 1993 to 1996.
Buck's recent projects have included the new Children's Hospice near Bristol, a major study and remedial works at Mullion Harbour in Cornwall, a major refurbishment of a listed building and extensions to many schools.