David Cameron is to make a victory tour of Libya with Nicolas Sarkozy.
The French president blurted out the secret plans yesterday at the G8 summit of world leaders in Deauville.
President Sarkozy said he and French Foreign Minister Alain Juppe have discussed plans to meet opposition leaders in the rebel stronghold of Benghazi.
He said: ‘I and Juppe will go when the time comes. It should be a Franco British visit. It could be quite clumsy if it was a separate visit.’
Surprise: David Cameron was said to have been 'visibly shocked' by Nicolas Sarkozy revealing potential plans to tuor Libya on a 'Franco British visit'
Mr Cameron looked visibly shocked when told that Mr Sarkozy had let the cat out of the bag.
He said: ‘President Sarkozy has lots of good ideas.’
British officials admitted that it is premature to consider a trip to Libya as the military campaign to oust Colonel Gaddafi continues.
But privately they acknowledge that a trip to Benghazi -- like the one Tony Blair made to Kosovo after the conflict there -- is likely at some point.
It is the second time in a week that the loose-lipped French premier has put Mr Cameron in a tight spot. His government revealed that Britain was to send Apache helicopters to beef up the war effort--four days before the prime minister signed off on the deployment.
Mr Cameron yesterday rebuffed an offer by Russian president Dmitri Medvedev to mediate a peace deal with the Gaddafi regime.
The Prime Minister made clear that talks could only take place once the dictator has left the country.
Paranoid: Colonel Gaddafi is said to be hiding in different hospitals to avoid Nato bombs and Libyan assassins
He said: ‘There have been various offers to mediate and I don’t particularly recognise the Russian offer from Medvedev.
‘I think the most important thing is to send a message back down the pipe: the message is Gaddafi has to go,'Mr Cameron said.
The PM said the war was entering a 'new phase' with the deployment of the four attack helicopters and bigger bombing raids.
Mr Cameron has been shown intelligence that Gaddafi is in an advanced state of paranoia and is dashing from the safety of one hospital to another at night dodging bombs and potential Libyan assassins.
He said there was a growing 'momentum' to the Nato campaign and a sense 'the regime is very much on the back foot.'
He said: 'Two months into the operation, I believe we are entering a new phase. It’s right that we are ratcheting up the military, the economic and the political pressure on the Gaddafi regime.'
The PM pointed out the G8 leaders have agreed a communique saying: 'Gaddafi has lost all legitimacy, he has no future in a free, democratic Libya. He must go.'
The declaration was also signed by Russia even though it had opposed the UN resolution authorising war.