PowerSwitch

If we are lucky (diligent, hardworking, rational) then we could end up doing what this family from Pasadena,CA did with their back, and front, yard:
www.pathtofreedom.com.
UK produce won't be quite so colourful; alot more turnips, cabbages and spuds. However, if people could be persuaded to buy a solar-powered geodesic green house instead of a new conservatory then that's a different story!
Get planting, everyone. The challenge is to get from window box to near self-sufficiency in as short a time as possible.
Rach

I totally agree with you there Rach, we're aiming at as much permaculture as possible in case seeds, tools, fertilisers, etc. are hard to come by. The thing is, you can't create it overnight, so now's the time to start. A lot of things can be shared, e.g. raspberries, strawberries, rhubarb, etc. etc. all need thinning and splitting and proliferate like mad, there should be enough to go around if we can find like-minded people to share and swap things with.

If you want more spice and colour, grow some chilli. I have successfully grown chilli in my bedroom window for years. Like other peppers they first go green and turn red if they get plenty of sun. I chop them up and store them in the freezer. They can also be dried.