Margaret Blacklock Evans was born in Dudley, the daughter of John Evans and Marjorie Withey. She was educated at Dudley Girls' High School and came up to Girton in 1942 to study Geography. She was captain of the Cambridge Women's Swimming team in 1944-45. She studied at the London Institute of Education 1945-46. Margaret Evans was a Geography Mistress at Park School, Preston for a few years. She then taught mainly in the Black Country and Birmingham, including Dudley Girls' High School, until December 1965, when she went to Ilford in the London Borough of Redbridge as Headmistress of Beal Grammar School for Girls, in Ley Street. She was reappointed in September 1974 to lead the creation of Seven Kings High School by joining Beal Girls to Downshall (co-educational) Secondary School in Meads Lane. She retired in August 1985 and was appointed OBE for services to education in the New Year Honours List, 1986. After retirement, she joined Redbridge Masters Swimming Club and broke a number of world records in the 60-75 age groups up to the year 2000. She then retired from competition but continued to support swimming. Her other interests included Ashurst Drive Baptist Church, interfaith organisations and racial and social equality. She also supported the campaign for biodiversity as a Friend of the Natural History Museum and volunteer Friend of Kew Gardens. [This biography is compiled largely from notes supplied by Margaret Evans herself in September 2011.]