RAF Northolt night photoshoot 16 March 2023 Report by Colin Coulthard RAF Northolt's Night Photoshoots started in January 2009 as a way to help fund raise for the restoration of Building 27 at RAF Northolt. Building 27 was built in 1928/9 and became RAF Northolt's Sector Operations Building, part of the Dowding system of Air Defence. Between 1936 and 1939 ACM Hugh Dowding used the building to develop what was to become the world's first Integrated Air Defence System. It closed as an operational operations building on 17th June 1940 due to its vulnerability to air attack Post WW2 it became offices, initially as the marketing department of embryonic British European Airways (BEA) who were based at Northolt between 1946 and 1954. It later served as various admin. offices for 32 Squadron.