This really if the dogs gonads of mini smokers!!! Easy to make (over here anyway ) and not much cash involved - about 100 dollars if you have to buy everything new. There is a long long thread on the VWBB which covers a lot of the evolution of this brilliant piece of kit, for anyone interested here is the link -
http://tvwbb.com/eve/forums/a/tpc/f/184 ... 049575/p/1This has been on my next to do list for a while, just got to gather a few bits and pieces!!!!!
Sorry, have no idea where you might buy the pot in the UK, I can only suggest a large stock pot probably from a catering supply place or something along the home brewing line. If I think of anything else I will let you know.