Yeah the over reaction to snow in the UK is pretty mental. Of course winter tyres will be better than summer tyres, thats not in doubt. I considered winter tyres last year but given I live in London I decided against it, and hey I made it, I'm still here
The majority of the south east will get snow at some point, but really, it is only for about a total of a week over a couple of months, for the hassle and cost of changing tyres and buying them in addition to the damage the salt and grit does to the underside of the car and wheels, just stay off the road. Yooo norven lot though, serves you right right for living in the wrong part of the country