The United Kingdom uses Greenwich Mean Time (GMT) as its standard time and switches to British Summer Time (BST) during the warmer months.
The UK observes British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October. During winter, GMT (UTC+0) applies.
For detailed DST schedules and history, see DaylightSavingTime.info.
The UK is in the GMT/UTC+0 time zone during winter and BST/UTC+1 during summer.
Clocks go forward on the last Sunday in March and back on the last Sunday in October.
For practical purposes, yes. GMT and UTC are essentially the same, though UTC is the modern scientific standard.
Check world time on our partner site WorldWideClock.com.