summer time 
noun [mass noun] British
Time as adjusted to achieve longer evening daylight in summer by setting clocks an hour ahead of the standard time. Compare with daylight saving time.This weekend we put the clocks ahead for summer time and I'll be able to cut through Soho Square on the way home every night....
- If you plan to be in London on that day, the time on your watch would be an hour later, because Britain will be using summer time (clocks moved forward an hour) in June.
- Kick off for Sunday afternoon matches is 3pm summer time, 2pm daylight saving time.