After seeing the poor creature in daylight, I?d say that it was not so much tabby as grey with black stripy markings. (By the way, thanks for the tip about that poster, MsDulwich - I did go to check it out but couldn?t find it.) Anyway, have now taken the cat to the lovely vet who deals with our own cat; she?s going to check to see if it has an ID chip. If anyone wants to enquire about it, they can contact the vet directly: A.J.M. Robson 020 7701 6452