It's conservative David Cameron, in a coalition with the Lib Dems.
Gordon Brown resigned as Labour leader and prime minister today, without waiting for the conservatives and Lib dems to come to agreement.
Lib Dem leader Nick Clegg will be deputy prime minster, and they will have 4 other cabinet posts. Only a few have been announced so far.
This evening the Lib Dems voted for the agreement that had been negotiated.