I was speaking to one of my friends at work yesterday morning (we work at Thresher HO so booze is often talked about lol!)
She was saying they came to clear out her shed and found loads of beer a year out of date, her son said he would take it so she said to try one can and ee how you feel in the moring! He was fine and the beer didnt last long!
Also there is one large drinks supplying company that sells booze off cheap to the staff!