Greene King IPA
Greene King: brewers of IPA. Except it's not really IPA as such, rather 'normal', mass-produced bitter. In fairness, they also do a rather spiffing Dark Mild and also the eminently quaffable Abbot Ale - one to be savoured.
All in all, the 'IPA' is not bad ale, but it must be kept well and, as such, it differs wildly from tavern to tavern - especially as Green King is now an ubercorporation on the scale of Scottish & Newcastle, and thus widespread. Try it - or to be more accurate - try avoiding it!