When I lived in Oxford, I took part in one curious May Day tradition. Many pubs would open at six in the morning, just on that day. This, I thought, was something I should try once. I got up at about five o'clock and went into town to meet a few friends. We arranged to meet in a pub called the Wheatsheaf at six, when it opened. It is, let's say, a rather strange experience drinking beer when you've only just got up.
We ended up going to about four different pubs. Part of this was to avoid the loud, braying Hooray Henry types who were characterised by not only their loudness, but their insistence on drinking only expensive champagne and their contempt for the plebeian oiks that had the temerity to live in Oxford. So, yes, it's possible that there were future prime ministers and cabinet members among them...