A few nice craft beers including one of my favorite American brewers, Shipyard, were on offer in Tesco Hackney for £1 each per 355ml bottle. Worked out to £2.82 per liter which is cheaper than most. Wasn't indicated as on offer, just listed as that price. Had Suffolk Dark by Greene King and St Edmunds Golden with cascade hops as well.
Several craft beers, including American Shipyard, 355ml bottles £1 (£2.82/L) @ Tesco