Troubleshoot tripping circuit - likely rodent damage - Electrical job in New Malden, Surrey

Job Description

We've had a rat issue which is now a tripping circuit issue. It is only the downstairs sockets that are affected. They are spread across three rooms.

So I'm looking for a trouble shoot of the socket ring main to identify between which two sockets have had nibbled cables and ideally this wiring to be replaced.

I would also be interested in a quote to have a residual-current circuit breaker installed.