When Do We Spring Forward In 2026 Uk. The period when the clocks are 1 hour ahead is called british. At 1 am greenwich mean time (gmt) , clocks are advanced one hour to 2 am british summer time (bst).
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 next clock change will be 30 march 2025 at 1am.