'The King' is put on a horse then festooned in a heavy garland of flowers topped with a smaller wreath. Thus 'crowned', he goes from pub to pub with great pomp and circumstance, with a Queen, a band, and most of the village following behind him. Music is played, songs are sung, ale is imbibed and, eventually (much to the relief of 'The King', no doubt) the larger garland of flowers is taken from him and put on top of the tower of the church, and the smaller wreath placed on the War Memorial (i.e. where the Maypole would have once been).
Castleton is generally a very interesting place: it has a ruined castle and four impressive show caverns which used to serve as Lead and Blue John mines. It's one of my favourite places, although it can get very touristy - that said, I don't live there, so I suppose I'm part of the problem.