Wroughton
The Science museum collection at Wroughton is definetly worth a visit. As well as G-AWZM the Trident 3 they have a Dan Air Comet G-APYC, TWA Constellation, DC3, Dove, and more. All the aircraft have been kept hangared since they arrived and as far as I know have not been robbed of bits for other aircraft. Both the Trident and Comet arrived by air and are in excellent condition.
They have open days during this weeks half term of which the aircraft hangars are to be open on Thursday and Friday. Check their web site or phone first just to make sure.