Thanks for the advice directed my way. The only reason I tried was the council seemed to have agreed a deal for cut price compost bins, black plastic with lid and small door at the front. I thought i'd benefit from material that I'd only get rid of otherwise; but kept filling it up, and pushing it down, and eventually it filled and I had to get the excess collected anyway. I concluded it needed continuous tending since it was failing to do anything, but maybe the thing that encouraged me to try was not the deal I thought it was. Perhaps, in the spring I'll pull it all out and see if anything has rotted down in the last 5 or so years. Not raising any hopes. No chance of kitchen waste though, don't know where it comes from. Veg isn't peeled, it is scrubbed, or at most scraped. Used tea bags are created at the rate of about one in six months. There's the occassional chicken, lamb, or beef bone, but I suspect that's not what was meant. And in the north facing back garden most of it is in shade, although being near the end it gets what sun is going.