I've been feeding a stray cat for 2 weeks (much to my two boys dismay). It's so thin and frail. I've tried asking neighbours, posting on the Facebook community page and writing a paper collar (but no one removed the collar or rang my number).
It has fleas and possibly worms. It eats more like a horse than a tiny cat.
I've been waiting to have a day off work so I could take it to the vet to see if it has a chip.
Finally I got the chance today.
So the good news is that the cat had a chip. The bad news is that the chip was unregistered. 
With some hard work from the vets, they managed to find out who implanted the chip and cross checked it with their diary of appointments and their records to find an owner. How they managed that is beyond me! 
Cat's name is Charlotte. 😸
They live about 30 minutes drive away. This poor little cat has done some miles!
More bad news, they cannot get hold of the owner.
My details have been taken. Charlotte is home with me, well outside anyway. They said if they don't get back to me by the end of the week, to call back.
My issue is that this Charlotte needs treatment. I'm debating whether or not to go and buy a cheap flea collar to tide her over, as much as I hate collars and don't think they're very effective. Surely better than nothing?