RAF Chipmunks did not get repainted into the red/white/grey scheme until 1971 and as WG304 was not retired until 1975, it most certainly would have worn this scheme. Whilst it did indeed serve with Cambridge UAS, it’s final days were with 5 Air Experience Flight at Cambridge also. However, I do not know the transfer date, so am unable to confirm the markings when with CUAS. I have photos of other CUAS Chipmunks but not this one.