(FILE PHOTO) Sir Keir Starmer has announced he is to stand down as MP for Holborn and St Pancras. TALLINN, ESTONIA - DECEMBER 17: UK Prime Minister Sir Keir Starmer talks with guests at a business breakfast reception on December 17, 2024 in Tallinn, Estonia. British Prime Minister Keir Starmer is paying official visits to NATO member countries Norway and Estonia this week. On Monday morning he met with Prime Minister Jonas Gahr Støre to discuss climate, energy and defence cooperation, before traveling on to Estonia, where he's attending a Joint Expeditionary Force (JEF) Leader' Summit. (Photo by Leon Neal/Getty Images)