The Lib Dem Business Secretary Vince Cable has told ITV News that the Coalition would run more smoothly if the Prime Minister resisted efforts to move the Conservative Party further to the right.
Vince Cable said: "It would certainly help the workings of the coalition if he remained in a moderate, central position."
More top news
Landlords have been warned they could face up to five years in prison if they fail to remove illegal immigrants from properties.
A picture of Cecil the lion - the animal killed by an American dentist in Zimbabwe - has been projected on to the Empire State Building.
A man, believed to be in his 50s, was pronounced dead at the scene after apparently suffering a heart attack.