Currently there are no airworthy Canberra's in the UK, although the ex-RAF
PR.9's at Kemble have the potential to be returned to the air. The only civvie Canberra on the UK reg for some time was the ex-Scorpion rocket record holder WK163 based at Coventry, but they had an engine problem a few years back and were trying to source a replacement. I believe, they had found one in the USA earlier this year, but I'm not aware of it having taken to the air again as yet.
There are a couple of ex-RAF a/c on the US civil register that are used for photo-mapping work, and there is the ex-WJ680 B.2/TT18 that is owned and flown on a regular basis at the Temora Aviation Museum in Australia, who also now own and fly the famous Meteor F.8 VZ467 'Winston'.