Beags - I think the B-something-or-other [probably a hybrid] belonged to Boscombe. In Gib, whilst on a T17 det, a Canberra arrived fitted with a refuelling probe. Needless to say, it caused quite a stir! Anyway, a Gp Capt appeared in our det office and asked some very pertinent handling questions. I took him round the T17 and discussed flying the jet. Turns out he was head tp and was due to fly the Boscombe Canberra later, to/from Gib, never having flown a Canberra before...!
I got a guided tour of this wierd machine. It had probe mounted just forward of the canopy on the centreline and a single pressure fuel tank (normal Canberra tanks were not capable of taking flight refuelling fuel pressure); it had previously been used for AAR trials [don't know the details].
Anyway, said Gp capt did do a CT sortie in/out of Gib without incident!