Nigel Farage was paid more than a quarter of a million pounds - at a rate of £22,500 an hour - to promote gold bullion, the MP’s latest register of financial interests shows. His total payment of £270,000 is the largest he has registered for work outside Parliament since he was elected two years ago. The Reform UK leader said the sum, from Direct Bullion, which pays him to be a ‘brand ambassador’, was for an estimated up to four hours work “per month over the course of a three-month period”.Reform UK Leader Nigel Farage's picture is seen endorsing a Gold Bullion firm on the first day of the Reform UK party conference (AFP/Getty)Mr Farage has a reputation as one of this Parliament’s highest-earning MPs for his work outside of the House of Commons. His recent declarations also show he earned £18,402 for around six hours as a presenter on GB News.The payments come as he continues to face scrutiny over a £5 million gift from Thai-based billionaire Christopher Harborne. The former Ukip leader is being investigated by Parliament’s sleaze watchdog, despite his insistence he was not obliged to declare the gift, which he says he received before he announced he would stand for Parliament in 2024. The Clacton MP has given various explanations for the money, including that it was to pay for his personal security, and that it was a “reward” for campaigning for Brexit throughout his political career.He recently insisted the gift was a “wholly private matter”, and refused to say if he had spent any of it on security, or on anything else.Asked by BBC Breakfast how much of the gift he had spent, he said: “It’s none of your business.”The Clacton MP has given various explanations for the £5 million gift, including that it was to pay for his personal security, and that it was a ‘reward’ for campaigning for Brexit throughout his political career.“I’m absolutely convinced I’ve done nothing wrong in any way at all,” he said, adding he did not regret failing to declare the donation at the time.Asked if he had given an interview about the possibility of becoming an MP before accepting the gift, Mr Farage said: “Yeah. And after that I said, after that I said, ‘I will not stand in this election’.“And I was pretty clear when a snap election was called that I wasn’t going to do it. I did change my mind subsequently.”Parliament’s standards commissioner is investigating whether Mr Farage should have registered the gift. If the probe finds he committed a serious breach of parliament’s rules, he could be suspended from the Commons. A suspension of 10 days or more could trigger a recall petition, which could potentially see him forced to fight his Clacton seat again.A spokesperson for Mr Farage said: “As has previously been reported and declared, Nigel Farage is a brand ambassador for Direct Bullion.”