Time for a tidy up and a warm bed
You might consider using a drum composter which will reduce vegetable matter and kitchen waste to a fine compost in a matter of weeks, in time for the spring.
Given that you have dug over the plot you could be sowing broad beans and peas in a sheltered spot at the end of the month. First though, if you have a heated greenhouse or frame you could be sowing lettuce, early cabbage, cauliflower and mustard and cress, at about at about 13°C (55°F).
No greenhouse or frame? No worry, why not give building a hot bed a try using layers of manure built up to about 600mm in a timber frame. Layer on 15cm of mixed soil and compost. Place a cold frame on top (this could even be an old window hinged on a box frame). Do this in January or early February and in a few days it will heat up, allowing you to start sowing spring vegetables within about four days, no matter what the weather’s doing outside the frame