Northwood is an affluent area in northwest London, England. It is located within the London Borough of Hillingdon on the border with Hertfordshire and 14.5 miles (23.3 km) from Charing Cross. Northwood was part of the ancient parish of Ruislip, Middlesex and has formed part of Greater London since 1965. Northwood adjoins Ruislip Woods National Nature Reserve. It was also used for location filming of the Goods' and Leadbetters' houses and surrounding streets in the BBC TV sitcom The Good Life acting as Surbiton.