British Summer Time (BST) starts on the last Sunday in March and ends on the last Sunday in October, at 1.00 am Greenwich Mean Time (GMT):
- in spring the clocks go forward, losing an hour – at 1.00 am GMT the UK moves to 2.00 am BST
- in autumn the clocks go back, giving an extra hour – at 2.00 am BST the UK moves to 1.00 am GMT
Clocks go forward 29 March 2009 28 March 2010
Clocks go back 25 October 2009 31 October 2010