Background
British Summer Time (BST) is the daylight saving time in effect in the UK and Greenwich Mean Time (GMT) stays the same all year round and is measured from the Greenwich Meridian Line at the Royal Observatory in Greenwich, London. It is the place from where all time zones are measured. In 2002 an order was made to link our summertime to Europe permanently. This means that the clocks go forward and back on the last Sundays in March and October respectively.
The dates for the next couple of years are:
2010 March 28 and October 31
2011 March 27 and October 30
2012 March 25 and October 28
Other Useful Links
http://wwp.greenwichmeantime.com/ - see the correct time right now, both local and GMT
http://www.crimereduction.gov.uk/seasonal03.htm - advice on how to prevent crime when the clocks go back

