@BobaCobb
The thing that doesn’t add up for me is that cats are treated as wild animals in law. They are allowed to roam where dogs are not and can be feral where dogs may be picked up by a dog warden. How does this match up with micro chipping, what happens if they have no owner? Also cats definitely decide who their owner is and they won’t care if the chip doesn’t match where they wish to live.
The cat can behave that way, but someone who wants a cat as a pet should still behave responsibly. Having a cat chipped decreases the chance of it going missing, and should reduce strain on refuges.
A beautiful roaming cat is maybe more at risk of theft than a dog which should be under control. Hopefully there will be some deterrent effect.
I guess various charities will offer free/cheap chipping for owners who can't afford it, as with dogs.
It may not be perfect but I can't really see any negatives.