Green Flash,
note quite. MRF got its first Canberra in 1957, a B2 WJ582. Around this time it also had briefly WE146, WE147 and WH952. The original aircraft was replaced in 1963 by WE173 for high altitude weather research. After modification, this aircraft had its first sortie for MRF on 7 Apr 64, but this was grounded 31 Mar 81 due to government cut backs.
Snoopy entred RAF service as a standard C Mk1 in 1966 with 48 Sqn in the FEAF at Changi. She was modified by Marshalls 1971-2 and first flew in the WMk2 guise on 21 Mar 73. Last flight MRF operational was 29 Mar 01, returning from Norway where she had been conducting research on Arctic ice.
She is now back at Cambridge being used as the flying test bed for the engines for the Airbus A400M.