Sinn Féin MP Martin McGuinness has rubbished claims by a number of tabloid newspapers that he is a high-level British spy. The claims were made on Sunday, but Mr McGuinness said today that he was certain no evidence would ever be produced to support the allegations. He also accused the Democratic Unionist Party of being in league with the British spy-handler who was allegedly the source of the allegation. "This is a dirty trick manufactured and constructed by people within the DUP who are now hooked up to others hostile to the [peace] process," he said