Garlic...planted Sept will crop June/July.
Leek.... bit late to plant now but it might just work.
Brussels Sprout.... Should already be a foot tall and will crop all
winter
if you choose the right varieties. (Trafalgar, Icarus)
Winter Cabbage.... Again, should already be in but you could try
planting
some and will crop during winter. (Winter Tundra)
Savoy Cabbage....as above.
Winter Cauliflowers.... (Walcheren Winter Armardo April) Again, should
already be in and normally crop about April... the best cauliflower crop
to
grow as there are no pests about. Nice clean heads. Freeze for use
later.
Broccoli....(Christmas Marvel) again, should be in now.

Work to do during winter...

Thorough clean up.
Winter digging... dig the plot in early winter (depends on soil though)
let
the frost get to it to break it up.
Incorporate manure (and spread lime if necessary).
Order seeds for the coming season (the best bit) :-)
Cut pea sticks (if you can find a suitable hedge etc)
Cut new Bean Poles for the framework (as above)



AND how could I forget Parsnips and Swedes both of which should already be
planted.


How do urglers use the ground after digging potatoes?

Almost all the crops mentioned above should already be planted..

I have just dug a new potato patch this year with a range of earlies to
maincrop and am wondering how best to use the land after digging the
earlies.