Thanks Pete - that plugged-in-the-ground model looks good and makes much more sense than the attempts I made with various big plastic containers. They involved a lot of messing around with compost, and I now know something I didn't about decaying vegetable matter. It contains plenty of aspergillus mold spores. We breathe them in all the time, and normally our lungs clean themselves. But if you have impaired immune system - I do, side effect of rheumatoid arthritis treatment - they move in and cause fungal infection, aspergillosis, in the lungs. Users of corticosteroids are vulnerable, too, and I've had my share of those. Mine came on after playing around with wormeries that never worked anyway - lose: lose. I keep my hands out of compost these days, although staying away from damp decayed vegetation is tricky for an angler.
I recognise those little redworms. I used to get loads at the bottom of a compost heap in the garden when I lived at home, and from muckheaps later. You'd never confuse them with the bigger, mass-produced dendra's or the brandlings you'd find near them sometimes. Great bait for roach and bream. There's a sign on the counter in my local ts: We sell proper redworms. There's also a worm farm a few miles away where you can buy as many dendra's as you want. The bloke used to breed his own, but has simplified his operation by buying in small worms and feeding them on. He gave me and a friend a tour of the sheds - I can show a girl a good time - and the worms are in big shallow trays of compost and fed on layers' mash chicken feed. One of our members on here is a worm fan, and is happy to hit the bank with just a kilo of them for bait and catch everything that swims. I've really only used them as hookbait apart from adding some chop to casters for roach in certain waters, but I can see the attraction of feeding and fishing them.