I was at AFC Hornchurch a few years ago where the bar just had usual keg stuff. They did have a couple of bottled beers behind the bar but I couldn't quite see what they were or what size the bottles were (I didn't want to get palmed off with some £3 330ml bottle of lager). She told me they had Spitfire and Cornish Knocker but didn't know how big the bottles were and did I want to look at the bottles for myself. In the best Carry On traditions I told her to forget the Spitfire but show me her Knockers! Luckily she thought it was funny.