At the moment , N Europe has a big continental high pressure system that is going to be quite stable so the conditions are dry, cold and a light wind. This may push all of our unstable wet Atlantic fronts more southerly towards you.
Cold on its own is not an issue but wet and cold is serious. Look after you feet and keep them dry. Take quick-drying clothes. Dress in layers and dont forget to use the layers to regulate your heat.
If you are camping in cold, wet conditions, then take great care not to bring mud and wet into your tent. I carry a small section of camping mat to sit on. Use a thick sleeping mat (or 2).