I change them the night before, though if it happened on a weekday I would be much less on-the-ball. This particular Saturday night
I shall be at a 70s/ Abba evening in Beaconsfield, wearing 70s gear(!) and it is probably best to change the clocks in a few hours time. I always have to be up on Sunday mornings, the choir has a warm-up before the service begins, and goodness knows what state I'll be in - the same for my fellow singers who will be at the party too.