A man who threatened on social media in May to shoot Reform UK party leader Nigel Farage was arrested, London police said on Wednesday, as concerns grow over the security of politicians following the killing of Ann Widdecombe, a former member of parliament. The man was arrested on Tuesday on suspicion of sending threatening communications to a member of parliament, the Metropolitan Police said. “I am going to shoot you in the head if you win,” he allegedly told Farage on social media, according...