Sunningdale is a large village with a retail area and a civil parish in the Royal Borough of Windsor and Maidenhead. It takes up the extreme south-east corner of Berkshire, England. It has a railway station on the (London) Waterloo to Reading Line and is adjoined by green buffers including Sunningdale Golf Club and Wentworth Golf Club. Its northern peripheral estates adjoin Virginia Water Lake.

The Royal Borough of Windsor and Maidenhead is a royal borough and unitary authority in Berkshire, South East England. While it is named after both the towns of Maidenhead and Windsor, the borough also covers the nearby towns of Ascot and Eton. It is home to Windsor Castle, Eton College, Legoland Windsor and Ascot Racecourse. It is one of four boroughs entitled to be prefixed Royal and is one of six unitary authorities in the county, which has historic and ceremonial status.