High Quality Content by WIKIPEDIA articles! RAF Northolt (IATA: NHT, ICAO: EGWU) is a Royal Air Force station situated in South Ruislip, 2 NM (3.7 km; 2.3 mi) east by northeast of Uxbridge in the London Borough of Hillingdon, West London. Approximately 10 km (6.2 mi) north of London Heathrow Airport, the station also handles a large number of private civil flights. Northolt has one runway in operation, spanning 1,687 × 46 m (5,535 × 151 ft), with a grooved asphalt surface.