Montane Featherlight Marathon Jacket
My personal favourite 
£50 - £100 is expensive for a windproof jacket. With a baselayer underneath I've found this to be great for winter - I live in the mountains so winter means snow, wind, horizontal rain/hail and any combination of these! The thing is, once you cut out the windchill you are not cold. Any windproof jacket will cut out the wind (obviously!) but I like this one because it's so lightweight, breathes brilliantly (it's made of pertex), and dries very quickly. Even for the most extreme winter fell runs, combined with a lightweight thermal bselayer, tights, gloves annd a buff I'm always warm enough. There are other colours available other than the purple shown......!