Alisdair first started acting at boarding school in a school production of Grease. After leaving school he joined the military after a short period of working for Esso. Alisdair joined the RAF in 1997 and continues to serve alongside acting in TV shows and films. Alisdair also is a keen fund raiser for charities working with the Rebel Legion and UK garrison both are Star Wars costuming groups. He is married to a teacher and has two sons.