St Margarets railway station, in the London Borough of Richmond upon Thames in southwest London, is in Travelcard Zone 4. It was opened by the London & South Western Railway in 1876 on the existing line from Waterloo to Windsor. The station and all trains serving it are operated by South West Trains. The station entrance is at the east end, nearer to London. The station is known as St Margarets (London) and St Margarets (Greater London) to differentiate it from St Margarets (Hertfordshire) railway station.