When Does Uk Time Change 2025. On 27 october clocks will turn back by one hour, as we change from british summer time (bst) to greenwich mean time. The clocks go back at 2am sunday 27th october 2025, marking the end of daylight saving time (dst) or british summer time (bst), and the move to greenwich mean time (gmt).

In the uk, the clocks will go forward by one hour on sunday 31 march 2025, when local time hits 1:00am. This marks the beginning of british summer time (bst)