I’ve seen pictures showing MF628 in camouflage at Biggin Hill around the same time, so perhaps it was repainted while it was displayed there?
I photographed it in the hangar at 1961 Biggin BoB and this was after the period of storage at London Airport.
‘Pagen01’ takes the camou scheme back to 1956 Wisley with the obvious Vickers connection to facility.
Mark