Correspondence from the Independent Adviser on Ministerial Standards to Alex Burghart MP 13.3.2026 | Her Majesty's Revenue and Customs The Independent Adviser wrote to Alex Burghart MP on 13 March 2026. The Independent Adviser on Ministerial Standards responded to Mr Burghart’s request to investigate the Prime Minister in relation to the appointment of Peter Mandelson as His Majesty’s Ambassador to the United States. https://www.gov.uk/government/publications/correspondence-from-the-independent-adviser-on-ministerial-standards-to-alex-burghart-mp