Update on Tabitha...
Well, I kept on feeding Tabitha every evening after starting this thread. As I mentioned in my other thread about Wooly, who is lost in Fulham, Tabitha looks very much like Wooly’s picture on her humans' lost cat poster, so I got in touch with them. They (J and A) came round to call out for her but she didn’t oblige with a visit while they were here and I discovered that they were off to Serbia on business the next day for several weeks – A is Serbian and Wooly was rescued from Kosovo – so we agreed that I would keep feeding Tabitha and, once I had won her trust, contact their neighbour who would come round to identify and, if positive, collect her.
We ourselves have just been away on holiday and while we were away, as well as Blip and the fox I had our cat sitter feed Tabitha. She had pretty much moved in to our garden by the time we returned from France so I got in touch with J and A again, only to discover that they were still away. However, they arranged for their neighbour to come round on Thursday. This good lady took one look at Tabitha and announced that she was certainly Wooly. So I put Tabitha / Wooly in our cat carrier and sent her home with the neighbour. She has subsequently called to say that one of J’s friends has checked Tabitha out and does not think she is Wooly after all! However, J is back tomorrow, the neighbour is happy to look after Tabitha in her house in the meantime and Tabitha is apparently content and settled, so I’m going to wait until tomorrow to decide what needs to be done next.
I think I am a pretty incompetent cat rescuer: I suspect I should have taken Tabitha round to the vet for a scan when I caught her rather than trusting the neighbour’s identification. Still, it’s only for a couple of days and she's safe and sound in the meantime...