Perfect for lovers of tasty brews and real ales take a walking tour of a few of londons independent brewers led by knowledgeable guides start at southwark brewery with a pint a tour and a talk getting a chance to taste and feel the grains and hops used in the brewing process then its on to brew by numbers for a bottle of beer before walking onward to fourpure for one drink tour and a talk all about the process of canning try a seasonal special brew at patrizen brewing before the last o