Thanks Helen for getting back to me. The Cats Protection said that they couldn't come out to trap the cat or scan it. I would have to go to them, pay a deposit of £60 to get a trap cage. If I do manage to trap the cat I have to take it to a vet to be scanned to see if it has an owner. They said that if it didn't have an owner and I wanted to bring it in to them for adoption there is an 8 week waiting list.
I am concerned that it would be very distressing for the cat if I trapped it. Also I could only do this on a Saturday as I don't drive and my husband works and it's too late for this Saturday and we go on holiday. I don't think it would stand much of a chance if it was put up for adoption and what do I do with the cat in the meantime. I can't bring it inside as I have my own cat so I would have to let it go again and it would mean having to re-trap it.
I think I could probably get close enough to it to scan it while it was eating. If it didn't have an owner I could then make a decision about whether to adopt it myself, maybe then trap it, get it any medical help and continue to feed it. I don't know where it sleeps at night. If it does have an owner, would I be given their telephone number just to have a chat.
Sorry, I'm just thinking out loud here.
I'll have a look at the list of places you gave and maybe I can talk to someone else who can scan it for me.
Thanks for your help.
Janice x