If your forum is still showing British summer time, and you dont know how to change it, then here is how...
Click on User Control Panel (somewhere up in the top left corner of your screen)...
Then click on the Board Preferences tab in the user control panel screen...
Next where it says Summer Time/DST is in effect check the NO option instead of YES...
Then click submit at the bottom and you are done and dusted and formally in the horrid dark evening mode we know as winter.
Sorted...