Are cat collars a legal requirement?

No. The RSPCA's guide for people adopting a rescue cat says cats are not legally required to wear collars. GOV.UK's collar-and-tag sentence on the microchipping page is about dogs in a public place, not cats.

If you still want a collar, for a bell, a reflector or a tracker, the same RSPCA guide says ill-fitting and elasticated collars can be dangerous. Use a quick-release buckle that snaps open when pressure is applied. Tractive says cats should wear a breakaway collar if its tracker is attached.

In England the cat still needs a microchip by 20 weeks, including indoor cats. That is a chip, not a collar.

Sources

• Getting ready for your RSPCA rescue cat — RSPCA, accessed 14 November 2026.
• Get your dog or cat microchipped — GOV.UK, accessed 14 November 2026.
• What's the difference between a microchip and a tracker? — Tractive Help Centre, accessed 14 November 2026.

On this site

Read cat collars and trackers.