1918. Four Belfast Hangars were built and are now listed buildings. Henlow Camp, a civilian settlement, grew up around the base at that time.

Originally a repair depot for aircraft from the Western Front, the Station officially opened on 18 May 1918 when Lt Col Robert Francis Stapleton-Cotton arrived with a party of 40 airmen from Farnborough. In May 1920, RAF Henlow became the first parachute testing centre and was later joined by another parachute unit from RAF Northolt. Parachute testing was undertaken