Selfsufficientish.com

Not sure how highly this would rank in other peoples priorities bit I think glass demijohns look nicer

There are bargains to be had for glass demijohns on evilbay, I picked up several very cheaply as they were local with collection only and noone else bid. It's worth setting up a search to email you when there's a local listing. Incidentally, if there's anyone local to Peterborough there's a few 54-litre green glass demijohns available at the moment. That's some serious brewing capacity all in one vessel!

got all my demi johns from free cycle or e bay now have 30 and did not cost more many 25 quid

and i think they look much better to