HTK-CS52 Modern Royal Air Force paint set vol. 1
Standard colours of RAF aircraft since 1990s
From 1990s (taking lessons from the Gulf War operations in 1990/91) the Royal Air Force expanded the use of "grey" camouflage schemes to it's ground attack and recce aircraft (including Jaguar GR1/3, Tornado GR1/4 and remaining Buccaneers) and BAe Hawk advanced trainers.
Harrier fleet had not converted to "greys" until 1995, still using the famous NATO Green / Lichen Green scheme on GR5, GR7/7A and T10/12 variants.
Modifications to "grey" schemes of RAF interceptors were introduced during that time, leading to Barley Grey adopted as standard overall colour of Eurofighter Typhoon force.