When Does British Summer Time Start 2025. British summertime is the practice of putting the clocks forward by one hour from standard greenwich mean time (gmt), between late march and late october each year. Next year, in 2025 the clocks will go forward on sunday, march 30, by an hour and they’ll go back by an hour on sunday 26 october.

There’s more daylight in the evenings and less in the mornings (sometimes called daylight saving time). In 2025 the clocks go forward on 30 march at 1am.