Proper noun
Northolt
A suburban area in the borough of Ealing, Greater London, England. RAF Northolt is in the neighbouring Borough of Hillingdon.
Birmingham and Stansted pioneered this approach in Britain and prior to the 2012 London Olympics, RAF Northolt introduced a Flightwatch scheme based on the same cooperative principles. Source: Internet
The first four aircraft to enter service with the RAF joined No. 111 Squadron RAF at RAF Northolt the following December. Source: Internet