Who is in charge?

We are about to enter a very bizarre period in British politics. At 1.10pm, Tony Blair will see the Queen and resign as Prime Minister. At 1.40pm she will see Gordon Brown and will ask him to form a new government.

But who is in charge in the intervening 30 minutes? Tom Kelly, Mr Blair's official spokesman, said this was a "silly" question. But the answer is, notionally, Sir Gus O'Donnell, head of the civil service.

Hopefully he will enjoy his brief period in charge