UK winter is mainly cold, windy and raining. From Oct to May I usually wear a Paramo jacket as a waterproof and a windproof.
If I'm using a goretex style waterproof, then I use a simple, unlaminated windproof in the dry.
Winter windproofs need a good degree of windproofing capability so I use the huff test. Hold against mouth and huff. I should be able to force breath through the material under pressure.
The cut needs a good seal at openings, a high collar to work with a buff.Pockets need a good cover, I prefer high chest pockets to rear or low ones. Anything banging around under my rib cage gets really annoying. Rear pockets on waterproofs are not very useful, more of a racing style. Mostly I use pockets for holding stuff off the bike, not when riding.