The North London line (NLL) is a railway line which passes through the inner suburbs of west, north-west, north, and north-east London, England between Richmond in the south-west and Stratford in the east, avoiding central London. Its route is a rough semicircle.

Richmond, also known as Richmond (London), is a National Rail station in Richmond, Greater London on the Waterloo to Reading and North London Lines. South Western Railway services on the Waterloo to Reading Line are routed through Richmond, which is between North Sheen and St Margarets stations, 9 miles 57 chains (15.6 km) down the line from London Waterloo. For London Overground and London Underground services, the next station is Kew Gardens.