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.
Mr Trump told reporters: "We're working already on a trade agreement. And I think it'll be a very substantial trade agreement, you know we can do with the UK, we can do three to four times we were actually impeded by their relationship with the European Union. We were very much impeded on trade. And I think we can do three to four or five times what we're doing."
He added: "We don't do the kind of trade we could do with what some people say is Great Britain. And some people remember a word you don't hear too much is the word England – which is a piece of it. But with the UK we could do much much more trade. And we expect to do that okay. "
Advertisement
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.
More from Boris Johnson
Mr Johnson will be hoping it means talks towards both begin in earnest on 1 November, having pledged that Brexit will happen "do or die" on the current Halloween deadline.
Discussions over UK-US relations are likely to have begun in advance of Mr Johnson entering Number 10, as the PM had a phone call with Mr Trump before his leadership victory was confirmed.
Mr Trump said last week that he "looks forward to working" with Mr Johnson, who he has repeatedly praised in recent months, and added he was confident "he will work out Brexit".
His praise has continued amid long-standing claims of an unwillingness on the part of the new prime minister to speak out against the president.
Earlier this month, Mr Johnson was accused of throwing the former British ambassador to the US "under a bus" for refusing to support for him during a TV debate with Jeremy Hunt.
Sir Kim Darroch resigned over leaked memos in which he described the Trump administration as "inept", prompting an angry Twitter outburst from the president.
Mr Johnsoninsisted afterwards that Sir Kim had his full support and that he would "continue to be robust" with Mr Trump if he became prime minister.
He pointed to his criticism of comments made by Mr Trump in which he told four US congresswomen to "go back" to the "broken and crime infested places from which they came" as evidence of his willingness to speak out, although Read More – Source
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.
Mr Trump told reporters: "We're working already on a trade agreement. And I think it'll be a very substantial trade agreement, you know we can do with the UK, we can do three to four times we were actually impeded by their relationship with the European Union. We were very much impeded on trade. And I think we can do three to four or five times what we're doing."
He added: "We don't do the kind of trade we could do with what some people say is Great Britain. And some people remember a word you don't hear too much is the word England – which is a piece of it. But with the UK we could do much much more trade. And we expect to do that okay. "
Advertisement
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.
More from Boris Johnson
Mr Johnson will be hoping it means talks towards both begin in earnest on 1 November, having pledged that Brexit will happen "do or die" on the current Halloween deadline.
Discussions over UK-US relations are likely to have begun in advance of Mr Johnson entering Number 10, as the PM had a phone call with Mr Trump before his leadership victory was confirmed.
Mr Trump said last week that he "looks forward to working" with Mr Johnson, who he has repeatedly praised in recent months, and added he was confident "he will work out Brexit".
His praise has continued amid long-standing claims of an unwillingness on the part of the new prime minister to speak out against the president.
Earlier this month, Mr Johnson was accused of throwing the former British ambassador to the US "under a bus" for refusing to support for him during a TV debate with Jeremy Hunt.
Sir Kim Darroch resigned over leaked memos in which he described the Trump administration as "inept", prompting an angry Twitter outburst from the president.
Mr Johnsoninsisted afterwards that Sir Kim had his full support and that he would "continue to be robust" with Mr Trump if he became prime minister.
He pointed to his criticism of comments made by Mr Trump in which he told four US congresswomen to "go back" to the "broken and crime infested places from which they came" as evidence of his willingness to speak out, although Read More – Source
