What does the "Report & cancel it" link in booking emails do?

The Don't recognise this booking? link cancels a booking the recipient didn't make and flags it to the restaurant for review.

Booking confirmation emails carry a small safety line — "Don't recognise this booking? Report & cancel it" — for anyone who receives a confirmation for a booking they didn't make, perhaps because someone mistyped their email address or used it without permission. Clicking it opens a page asking "Wasn't this you?"; nothing happens until the person presses Yes, cancel this booking, at which point the booking is cancelled and flagged, and the restaurant is alerted to review it. On the restaurant's side the booking then carries a red "Not me" chip on its row and in the booking detail, with a note explaining any deposit is held for review and nothing refunds automatically — and it opens from the Cancelled tab like any other cancelled booking. Any deposit is held for manual review rather than refunded automatically — the restaurant will contact the customer about a refund if applicable — and no no-show or late-cancellation fee is ever charged for a booking cancelled this way. Closing the page without clicking leaves the booking as it was, and genuine customers who just want to change or cancel their own booking should use the Manage booking link in the same email instead.

Related: How do I share my online booking page?