Breaking: Donald Trump and Boris Johnson 'already working on' UK-US free trade deal

Donald Trump has said he and Boris Johnson have already started working on a free trade deal between the US and the UK.

The US president said the pair had spoken since Mr Johnson became prime minister and that they plan to spend time together to formulate an agreement.

Downing Street confirmed that talks between the two leaders had taken place on Friday evening and that they would meet at a G7 summit in Biarritz, France, next month.

Number 10 said Mr Trump had expressed his commitment to an "ambitious free trade agreement", with formal talks to begin "as soon as possible after Britain leaves the EU".

In another Friday night phone call, Downing Street said Canadian Prime Minister Justin Trudeau also pledged to work towards a "smooth transition" to a free trade agreement with the UK after Brexit.