Overview
- The UK moved to Greenwich Mean Time at 2am on Sunday, 26 October 2025, and will stay on GMT until 29 March 2026.
- Most smartphones and computers updated automatically, but ovens, microwaves and many car dashboards may need manual resets.
- Experts advise easing the change by shifting bedtimes gradually, avoiding caffeine after about 2pm, seeking morning light and limiting evening screens and naps.
- Sleep and medical researchers warn the biannual shift disrupts circadian rhythms and is linked in studies to short‑term increases in accidents and some adverse health outcomes, and several advocate permanent standard time.
- The UK’s switch coincides with international practice—Israel also reverted to standard time—while EU efforts to end seasonal clock changes remain stalled.