A source has confirmed to Sky News that the foreign secretary and former PM – who were on opposite sides of the Brexit referendum campaign – held talks.
Sky News understands the meeting was a long-standing catch-up, during which a number of issues were discussed.
Mr Cameron called the EU vote and campaigned for Remain. He announced his resignation the morning after voters backed Brexit by a margin of 52% to 48% in June 2016.
Brexit talks could see ‘blood on the carpet’
Ministers have 12 hours to map out the government’s preferred option for the UK’s post-Brexit future – but will all be on board?
The remarkable development comes as his successor gathers her cabinet at her country retreat of Chequers in a bid to agree on what they want Britain’s post-Brexit relationship with the EU to look like.
But there are vastly differing views on how closely, if at all, the UK should mirror Brussels’ rules and regulations when it comes to issues like trade and customs.
Leavers say sticking too close to them would not represent the will expressed by voters in the 2016 referendum to “take back control”, while Remainers argue going too far the other way would lead to chaos for businesses.
The plans being considered by ministers could see the UK keep a “common rulebook” with the EU for all goods, including agricultural and food products.
It has also been claimed that Downing Street is prepared to concede that plans to align the UK with EU regulations in this respect would make a free trade deal with the US unlikely – something Number 10 later came out and dismissed as “categorically untrue”.
Speaking ahead of the summit, which will last well into Friday evening, Mrs May said the government had “an opportunity – and a duty” to reach an agreement.
“We want a deal that allows us to deliver the benefits of Brexit – taking control of our borders, laws and money and by signing ambitious new trade deals with countries like the US, Australia and New Zealand,” she said.
“This is about agreeing an approach that delivers decisively on the verdict of the British people – an approach that is in the best interests of the UK and the EU, and crucially, one that commands the support of the public and Parliament.”
But the proposals revealed thus far have gone down like a bucket of cold sick with eurosceptic Tory MPs – and sparked speculation about whether there could be ministerial resignations.