Keith Strachan (born 21 January 1944, Consett, County Durham) is a British composer and theatre director. He co-wrote the song "Mistletoe and Wine", which got Cliff Richard the 1988 Christmas number one. His TV work includes the theme music for Who Wants to Be a Millionaire?.Strachan attended Blaydon Grammar School and after reading maths and science at Queen Elizabeth College, London University he became a maths teacher.