Squadron Leader Geoffrey Harris Augustus Wellum DFC was a British fighter pilot and author, best known for his participation in the Battle of Britain. Born an only child in Walthamstow, Essex, Wellum was educated at Forest School, Snaresbrook before serving in the RAF. After the war he remained in the RAF until 1961, and later ran a haulage business. In the mid-1980s he retired and moved to Mullion, Cornwall, where he wrote down his wartime memoirs. In 2002 these were published as First Light.