"One thing I can't really understand is the Weatherspoons chain, how can they sell it so much cheaper than the rest? It's almost as low as club prices. If they can do it why can't other chains?"

Weatherspoons speciality is buying up beer near to it's sell buy date for very little money and using it's logistic capacity to get it out to the pubs fast. The breweries make a loss on a lot of the beer they sell to Weatherspoons but it works out cheaper for them than just emptying it down the drain. It all means that they keep turning over the beers they stock..

Steve