Sarum Hall School was founded in September 1929 at 51 Eton Avenue, Belsize Park by Miss Violet E Webb, the first Headmistress. Miss Webb had been a pupil at the Godolphin School in Salisbury and named Sarum Hall School after that town – Sarum is the Roman name for Salisbury.
The first term began with just seven pupils; double that number enrolled for the second term and at the beginning of the second year there were 28 pupils. The oldest year group that started at Sarum Hall School in 1929 had just three pupils in it all the way up through the School.