The Prime Minister was struggling to save face after her guest savaged her Brexit plans, saying they would “kill” any prospect of a major trade deal with the US.
Education minister Sam Gyimah tweeted: “Where are your manners, Mr President?”
He told the Evening Standard: “Whatever your point of view, manners and civility matter.
“It’s not just about how we Brits do things, it’s about common decency and respect.
“The US president has fallen far short of that standard on his visit.”
Another minister, Margot James, attacked Mr Trump for praising former foreign secretary Boris Johnson in an interview with The Sun, saying he would make “a great prime minister”, just days after he walked out of Mrs May’s Cabinet criticising her EU policy. Ms James, the creative industries minister, said: “No Mr President, Boris Johnson would make a terrible PM.”
It was left to Sir Alan Duncan, the Foreign Office minister, to try to paper over the cracks in US-UK relations by laughing off Mr Trump’s wrecking ball remarks, saying: “That’s his style, that’s the colour he brings to the world stage.”
Chancellor Philip Hammond seemed to excuse Mr Trump by saying: “The president hasn’t yet had a chance to discuss with the prime minister the white paper … I’m sure there will be a very positive discussion.”
But US network CNN called it “an astonishing political knifing of the British prime minister” by the president.
The Washington Post said Mr Trump had “blasted” his hosts, despite a red carpet welcome at Blenheim Palace last night and tea with the Queen today at Windsor.
An unrepentant Mr Trump left Winfield House, the US Ambassador’s residence in Regent’s Park, shortly after 9am, doing his trademark fist pump before boarding his Marine One presidential helicopter.
He was due to attend a joint US-UK special forces military demonstration at the Royal Military Academy Sandhurst before talks at Chequers. First Lady Melania Trump was meeting Chelsea pensioners at the Royal Hospital Chelsea and London schoolchildren with Philip May, the PM’s husband.
Conservative MP Sarah Wollaston said Mr Trump was “determined to insult” Mrs May. She added: “The divisive, dog-whistle rhetoric in his @TheSun interview is repulsive. If signing up to the #Trump world view is the price of a deal, it’s not worth paying.”
Shadow foreign secretary Emily Thornberry told ITV it was “extraordinarily rude of Donald Trump to behave like this. She is his host. What did his mother teach him? This is not the way you behave.”
Former Tory minister Nick Boles said: “The President of the United States must always be welcome in Britain. But I would no more take advice from Donald Trump on negotiating Brexit than I would on staying married or choosing a good hair dye.”
Former Business Minister Anna Soubry tweeted: “The more @realDonaldTrump insults and undermines @theresa-may, the more he enhances her credibility. Trump is a guest in #UK because we respect the great office he holds. Yet again he diminishes the standing of the great country he is meant to lead.”
Sir Alan brushed over the row but contradicted the president over the prospects for a US trade deal, insisting “there is absolutely no reason, legally and practically” why it cannot happen. “And I think that actually both sides do want it to happen,” he added.
Labour MP Wes Streeting called for Mr Trump’s tea with the Queen to be cancelled. “Given his remarks about the Prime Minister and the Mayor of London, this would be the right moment to cancel Trump’s tea with the Queen. He doesn’t deserve it — and the Queen certainly doesn’t deserve it!”