Just some pics of my UDS. Cost me about £25 in total. Thanks to everyone in this thread who helped. I only read about 250 pages and by then all my questions were answered.
Oil drum free from local garage, contained motor oil and had a sealed lid.
Used an angle grinder to cut the lid off so it can still be used.
The finished UDS. Had a good burn out and rub down. Painted with a rattle can. Taylor thermometer from ebay for about £12. Had to buy some stailless nuts and bolts, again from fleabay.
Used magnets to control air intake. I will probably go to a ballvalve setup when i find one for free.
Used an old cast BBQ grill, and old matress springs for the charcoal bucket.
The webber lid fits a treat.
Not had a chance to fire her up yet, but hoping to soon.