Yes, it is the same Bingo! Can't believe you remembered!
He's now named the Proot as he likes to sleep on our pillows (he progressed very quickly from his cardboard box!) and at breakfast o'clock he purrs and very quietly says "pprrooot" into your ear until you get up.
He didn't answer to Bingo anyway - he's also deaf as a post!
He's gorgeous, and of course he's not senile - though it turns out he has hyperthyroid.
We eventually sorted things out with the neighbours who still don't want to officially let us adopt him - but "let" us look after him, take him to the vet, (and pay for him, of course). Main thing is that he's happy. We're so glad we took him under our wing