While the beer here is tasty (Hackney Church 1792 Imperial Stout), next door was Escape Pod by Pressure Drop - blew my mind. If ever in London and a true beer drinker, check out Hackney - The Experiment has 2 breweries featured (both excellent), next door is Hackney Chruch (well worth the visit), and just down main street is The Cock Tavern (excellet draught and a bunch of cask, plus ciders).