Over winter veg what can i grow?

[Lurch]

Ok, as some of you may know this has been my first year, and was a bit late getting started.
I still have carrots and runners beans and my onions have been dried and stored. My swede are going well yet and I have xmas drumhead cabbage and purple sprouting in at the mo.

What else can i put plant out which will be ok over the winter. Or is it too late and best start again next year. Being a noob to the whole home crop thing, surely there is more to grow over this period?
The garden centre didnt seem to have much except for seeds for next year, but i havent been for a couple of weeks.

[Capsid]

You could try the overwintering onion sets, garlic, broad beans (aquadulce variety) and spinach.

[vegnut]

If you have a cold greenhouse or a cloche, then try some winter gem lettuces.