Gerry and Sylvia Anderson with Reg Hill
Mission and Rank
Lieutenant, interceptor pilot
Lt. Mark Bradley is a Caribbean-born interceptor pilot based on the Moon. He becomes romantically involved with Lt. Ellis for a time, leading to a temporary assignment at SHADO HQ on Earth, and later briefly assumes the position of Moonbase commander. Baird left the series after filming four episodes, but appeared in stock footage in two later episodes.