British Summer Time Begins 2025. Discover when daylight saving time (dst) begins and ends in the united kingdom. It's an exciting time when the clocks go forward by one.

Campaigners have sought a return to british double summer time or a permanent british summer time to save energy and increase the time. British summer time (bst) occurs on the last sunday of march and represents the phenomenon when the clocks go forward in spring by one hour and, in autumn, on the last sunday of october, reverts to greenwich mean time.