Microchipping is a very good idea in cats more than almost any other animal due to their free-roaming nature, just in case the worst should happen and they go missing. The procedure involves injecting a small transponder about the size of a grain of rice into the scruff of the cat's neck. This chip has a unique ID number which is stored along with your name and contact details on a database with a company called Petlog.
If your pet gets lost and is taken to the police, a vet or the cats protection league, they will be scanned, petlog will be phoned with the chip ID and you will be contacted as soon as possible.
Microchipping costs £15 for the life of the cat (or £10 if done at the same time as neutering) which is a small price to pay for the peace of mind that it brings. Once the chip has been implanted, you will be required to come to the vet 10 days later for a scan so we can check it is working. After that, your details will be sent to Petlog and you will be covered for life.