Ahh Five bells you would be talking about the interTerminal Pool and darts championship. One runs on a 3 year rotation the other on a 4yr rotation. You've guessed it, the 12 yr cycle when they clash coincided with the opening of Terminal 5.
Wierdly last Thursday was the opening rounds of both contests, everyone has ago and gets involved so it's quite a busy day.. Stupid of management to plan their opening when there was so much else going on....
Oh the link to williewalshgame
www.weewilliewalsh.co.uk