Looked for customer reviews for Warranty Shop and very hard to find any.
Wot gives it no Security ratings so maybe something new which has not been rated yet.
Hotpoint gives you a 5 year warranty on most of there things so if your appliances are over 5 years maybe best to let them run till they need renewing.
Sods law will probably work.The week after the warranty runs out one of your appliances will conk out.
Example.My van insurance company phoned me to see if I wanted to safe guard my no claims bonus in case of an accident.I told them I was not intending to have an accident so I refused.
You guessed it next day I had an accident and lost all of my no claims bonus.