When Does British Summer Time Start 2025. Get an overview of the schedule, its impact on the country, and the history behind the adoption of this. British summer time (bst) twice a year, (the last sunday in march and the last sunday in october) the clocks change.
British summer time (bst) is 1 hour ahead of coordinated universal time, utc+1; Marking the start of british summer time, the clocks ‘spring forward’ in march, meaning we’ll lose an hour’s sleep