"Delia Derbyshire was born in Coventry, England, in 1937. Educated at Coventry Grammar School and Girton College, Cambridge, where she was awarded a degree in mathematics and music.
In 1959, on approaching Decca records, Delia was told that the company DID NOT employ women in their recording studios, so she went to work for the UN in Geneva before returning to London to work for music publishers Boosey & Hawkes.
In 1960 Delia joined the BBC as a trainee studio manager. She excelled in this field, but when it became apparent that the fledgling Radiophonic Workshop was under the same operational umbrella, she asked for an attachment there - an unheard of request, but one which was, nonetheless, granted. Delia remained 'temporarily attached' for years." Link
For more on the BBC Radiophonic Workshop watch Alchemists of Sound in full.