Hello Sweep,
Yes, I believe you are talking about WV787.
Air-Britain : WV787
If this is the same machine, it is preserved at the Newark Air Museum. Some additonal info on it here:
Aircraft WV787, 1952 English Electric Canberra B.2 C/N EEP71644
Wikipedia states:
"WV787 was built as a Canberra B2 in 1952, it was loaned to Armstrong Siddeley and was fitted with Armstrong Siddeley Sapphire engines. It was later transferred to Ferranti for trials for the Blackburn Buccaneer radar and fitted with a B(I)8 type nose and a Buccaneer style radome. It next was moved to the Aeroplane and Armament Experimental Establishment where it was modified to be used as a water-spray tanker aircraft for de-icing trials. It would fly in front of the aircraft being tested which would fly into the artificial cloud created by the sprayed water to induce icing. It was retired in 1984 and later preserved at the Newark Air Museum and is a National Benchmark airframe on the National Aviation Heritage Register".
Are you still in touch with Jim Cox by chance? Also, I still need your final rank on leaving the RAF for my book!
Cheers,
Steve