Some people (PB) think they can economize by protecting only critical in-house circuits (TV, etc.,) with cheap surge protectors.
This is a mistake because a surge can do far more damage to electrical wiring, and things you might not consider (mainly, anything with a circuit board in it).
Some people, with computers, fancy stereo systems and the like, protect the whole house and also protect inside circuits.
Single circuit protectors (in addition to a whole RV protector) gives better added insurance.
For computer and video/music systems, protectors with multiple outlets only cost £15 (but aren’t good enough).
Much better whole house surge protectors inside include as options ‘phone line and co-ax cable protection as well as filters to keep power line noise and RFI (radio frequency interference) from annoying you.
So PB the following are now going to fail in the next year.
Central heating boiler
TV
DVD Player
washing machine
toaster
any radios or anything else that where plug in at the time.
Call in a electrician, have your wiring inspected and get “whole house surge protection” installed before you replace anything else.