Nigel Farage, the Brexit Party leader, has delivered a surprise speech at a Donald Trump rally where he called the US president the “most resilient and bravest person I have ever met in my life”. Standing next to Mr Trump in the blazing sun at Goodyear, Arizona, Mr Farage said that a vote for the president this election would be a vote for “decency”, “plain speaking” and a cut in taxes. The thousands of Trump supporters present responded with cheers and Mr Trump thanked Mr Farage for his speech afterwards, saying he was "glad" he called on the British politician. However critics will question Mr Farage’s decision to intervene so explicitly in the US election, less than a week away, given the convention of foreign politicians not getting involved in overseas campaigns. The three-minute address follows a similar speech Mr Farage, the former UK Independence Party leader, gave during Mr Trump’s 2016 presidential campaign. He had given that address shortly after Britain voted to leave the European Union. It helped cement a newly forged friendship, with Mr Trump dubbing him “Mr Brexit”.