CRATE Brewery have amassed a lineup of sour beers that'll make you pink in the face and hot under the collar. Join them at the main bar where they'll take you on a guided tour through the depths and delights of some of the world's top sour beers, tasting a selection of guest sours as well as their own CRATE sour. This is the perfect way to get involved in London Beer Week, but be quick: spaces at this pale extravaganza are very limited. Over 18s only. Valid ID required.