John Cossins, one of the volunteers of the York Clock Group at Terrys Clock Tower, York.<br />In the UK the clocks go forward 1 hour at 1am on the last Sunday in March, and back 1 hour at 2am on the last Sunday in October. The period when the clocks are 1 hour ahead is called British Summer Time (BST). There's more daylight in the evenings and less in the mornings (sometimes called Daylight Saving Time).<br />John and his volunteers are responsible for changing around twelve clocks across York.<br />The Clock Tower, York, converted by the PJ Livesey Group.