The server is in GMT.
In 1968 to 1971 Britain tried the experiment of keeping BST - to be called British Standard Time - throughout the year, largely for commercial reasons because Britain would then conform to the time kept by other European Countries. This was not good for the school children of Scotland as it meant they had to always go to School in the dark. The experiment was eventually abandoned in 1972, Britain has kept GMT in winter and BST in summer.
Source > http://greenwichmeantime.com/info/daylightsaving.htm