The head of the Government is the Prime Minister. The name of the current Prime Minister David Cameron, who succeeded Gordon Brown in 2010.
leaders came to power in Great Britain.
The people of Great Britain call it Christmas.
Raymond Poincare
Great Britain
Well, if this is what you are asking Great Britain is ruled a parliament.
Winston Churchill in World War 2.
yalta
Firstly it was Neville Chamberlain. Later on it was Winston Churchill.
they have sex :)
The leaders of China, Russia, Great Britain, and the United States were known as the Big Four. They were the largest players in the Allied Powers during World War II.
Brits
http://en.wikipedia.org/wiki/Allies_of_World_War_I#Leaders