I suppose I should set the time on the rest of the clocks in the house, moving them an hour forwards. Thankfully the computers sort themselves out and our phones have a 'daylight savings time' setting which needed selecting. All the other clocks need doing by hand:
2 in the bedroom, kitchen clock, 1 in the living room, 1 in the dining room, video recorder, my watch (twice - for the analogue and digital display).