Jacko, WT 346 wasn't "given" to the RNZAF Musem. Cosford sold it to a London scrap dealer! However, the RNZAF Museum at Christchurch, NZ, were looking for a B(I)8 at that time and managed to secure it, thus saving it from becoming a frying pan. You should be grateful!
The aircraft was dismantled and shipped to NZ in April 1993 and is currently in store at their Museum...admittedly in bits! As they already have a Canberra on display, albeit an Australian one, they might sell it back to you!
Personally, I would prefer it to be reassembled and displayed because it at least looks like a B12.