@jules79, seriously I'd look at getting some winter tyres (I'd recommend Bridgestone Blizzaks). Honestly the difference in traction roadholding and braking on ice, snow, slush or even cold wet roads is astonishing even on a 2WD car.
We fit winter tyres to all our vehicles, usually in September and leave them on until March/April depending on weather. As long as you have somewhere to store them just buy a cheap second set of steel wheels and have the winter tyres fitted to them so you can swap them on yourselves. My wife and I can drive our powerful rear drive cars on sheet ice and even 3" snow with no wheelspin (on winter tyres) where even 4x4's on summer/all season tyres struggle for grip.
Over the long term they don't cost any more money because while the winters are fitted you are not wearing out your summers and vice versa so a set of summers and a set of winters typically last us 6 years of driving (15K miles a year).
Our Land Rover is actually a daily driver, not just for winter but due to only doing 6K miles a year of local driving that stays on winter/snow tyres year round and the tyres still last 40K+ miles. :-)