St David's School was an independent girls' school in Ashford, England. The school was originally established in London in 1716 as the British Charity School or Welsh Charity School. It was located in a purpose-built home on Clerkenwell Green from 1738, before moving to Gray's Inn Road in 1772, and eventually to Ashford in 1857. It was at first a boys' school, and then from 1758 co-educational, but from 1882 it began to admit girls only and became known as the Welsh Girls' School. It changed its name to St David's School in 1967, and closed in 2009.

Ashford is a town in Spelthorne, in Surrey, England, 14 mi (23 km) west of central London. Its name derives from a crossing point of the River Ash, a distributary of the River Colne. Historically part of Middlesex, the town has been part of Surrey since 1965. Ashford consists of relatively low density low- and medium-rise buildings, none of them being high rise. If excluding apartments most houses are semi-detached. In 2011 it had a population of 27,382.