May fronted up to the media, after a volatile visit from US President Donald Trump at the end of last week, in which Trump appeared to openly undermine her negotiating stance and praise former Foreign Secretary Boris Johnson, who resigned last Monday, as a future Prime Minister.
Well I don't want to speak for her, but I can tell you I liked her.
Before leaving Britain for a summit in Finland with Russian President Vladimir Putin, Mr Trump breached British royal protocol by publicly disclosing the details of a conversation that he had with Queen Elizabeth about the complexities of Brexit.
While responding to a question during BBC's Andrew Marr Show, Theresa May said "He told me to sue the EU".
The man unfurled a banner, which said "Trump Well Below Par", was being linked to a campaign by Greenpeace.
The comments come after a contentious visit from the USA president, during which he criticized May's approach to Brexit.
A White Paper published on Thursday fleshed out details of her plan, which advocates close links with the European Union on trade in goods, but not services.
She said such rules were needed to protect jobs in firms with supply chains that crossed borders and deal with the Irish border issue.
It came as she defended her Brexit strategy and warned rebel Tories calling for a clean break that they could derail the process altogether.
Despite Russia's semi-pariah status among some Americans and US allies, the Kremlin has always been trying to arrange a summit, betting that Putin and Trump will get on well and stop a sharp downward spiral in bilateral ties.
May said that Trump, who had been in Britain for a visit, had noted that since she's already entered negotiations, she should not walk away. Airbus warned last month that it could start pulling out of Britain but Mrs May will claim proposals for a "common rule book" with the European Union secure industries, such as aerospace, with complex supply chains.
Asked to rate USA -U.K. relations, Trump gave them the "highest level of special".
Good Morning Britain host Piers Morgan took the opportunity to discuss Trump's one-on-one time with the Queen on Air Force One. "So, I want us to sit down to negotiate the best deal for Britain", said May. That has infuriated fervent Brexit supporters, who see it as a bad deal.
She added: "Let's just keep our eyes on the prize here. If we don't, we risk ending up with no Brexit at all", she wrote in an article in the Mail on Sunday newspaper, using the colloquial term for the British exit.