I've done quite a lot here in Oxford - green manure mix of rye grass and vetch sown over the early potato and squash areas, which amounts to about 10 poles out of the 25 poles not devoted to fruit. My large area of dahlias and chrysanthemums still bearing profusely - the only way I can deal with all the blooms once the house is full ('Makes the place look like an undertaker's', says my wife) is to put them on a table in the lane with a sign inviting passers-by to buy 3 for £1, which has brought in £135 so far this year, under the category 'incidental surplus crops', so that's next years plot rent paid for!
Runner beans still giving edible pods - in mid-October; this year I'm going to try treating them as perennials, leaving them in the ground and mulching with horse poo. I'll cut off all the dried climbing stalks, save all the dried pods, and, I hope save myself the job of re-building the 2 sets of bean frames for next year, which I always find tedious. iIhope the frames survive winter gales - they're a mixture of old and new bamboo poles, mixed with hazel sticks from our site coppice, reinforced with lots of triangulation, so I'm optimistic that I won't have to do too much patching next summer...
I still have 2 short rows of maincrop spuds in the ground, which I hope to dig this weekend. Then the plan is to build 2 more large raised beds out of pallets sunk into the ground, lined with mypex, filled with lasagne layers of newspaper, horse poo, soil, my own compost, mushroom compost, topped off with cheao B&Q baled multi-purpose seed compost. It's quite a lot of work, but the one I did last winter, with an internal area of 4 feet by 12 feet, has been a great success, and saved my old back and knee joints during this summer - my crops which need low level hand weeding have been suffering for a few years because it's been so difficult for me to get down to ground level, and even more difficult to get up!
Last winter I also constructed a 4 ft high table, 4t wide by 12 ft long, out of palettes and old timber planks, that will hold 8 balers' trays, which I use for growing salads, beetroot, dwarf beans etc at chest height. Very pleased how that has also saved the old back, and given crops that were getting lost among the weeds last year. But I'll need to refresh the composts etc in the trays over winter...