At the 1958 British Empire and Commonwealth Games in Cardiff she won gold in the 220 yards breaststroke and the medley relay.At the 1960 Summer Olympics in Rome, on 27 August 1960, at the age of 19, she won gold in the 200 m breaststroke in 2:49.5 ahead of West Germany's Wiltrud Urselmann (2:50.0), setting a new world record time.[11] Lonsbrough was born in York to Stanley and Maud, and spent her childhood in India where her father, a Sergeant Major in the Coldstream Guards, was posted.[2] After the family’s return to Yorkshire, she was educated at St. Joseph's Catholic College, Bradford, a girls' direct grant grammar school.Lonsbrough worked as a swimming commentator for BBC radio for many years alongside Peter Jones.