When
There is no pre-determined limit.
Gordon Brown
David Cameron is the British Prime Minister and Ed Miliband is the leader of the Labour party, the current main opposition party.
Gordon Brown
Oliver Cromwell.
Winston Churchill
David Cameron is the current leader
There is no political leader of Great Britain. Great Britain is the larger of the two main islands of The British Isles - there are more than 1000 smaller islands. Great Britain includes England Scotland and Wales and these, together with The Province of Northern Ireland make up The United Kingdom of Great Britain and Northern Ireland. The Prime Minister of The United Kingdom is David Cameron. As of May 10 2010 the political leader of the United Kingdom is David Cameron. His Conservative party won the most seats in the recent election, but did not get enough to give him a clear majority so he is head of a coalition government.
Winston Churchill
No, but Harold Wilson was
Prime Minister.