I'm playing devils advocate, what I was trying to say is, if you don't have a surge protector then your TV will break, possibly because of a surge (unlikely but possible) but probably because its made of crap. If you do have an SPD fitted your TV will still break because its made of crap, no surge protector will stop that, but you are down £250.
Surely the most sensible thing to do with £250 is buy some sort of insurance policy that protects electronic stuff against damage.
And how come this wasn't a problem a few years ago, metal oxide varistors have been around since adam was a lad, there was never any need to fit them 10 years ago to anything. Are TV sales going to fall off a cliff now we are getting surge protectors, if that was true the tory mates that own big electronic business would never allow them.