Life is short but lovely.

For 2006-2010 inclusive, the summer-time periods begin and end respectively on the following dates at 1.00am Greenwich Mean Time:

In 2006: the Sundays of 26 March and 29 October
In 2007: the Sundays of 25 March and 28 October
In 2008: the Sundays of 30 March and 26 October
In 2009: the Sundays of 29 March and 25 October
In 2010: the Sundays of 28 March and 31 October
In 2011: the Sundays of 27 March and 30 October
Reference: http://www.dti.gov.uk/employment/bank-publ.../page12528.html