Most of the President’s family flew in for a guided tour of London’s hotspots with the royals on the first day of their state visit to the UK. Protesters waved their banners and everyone waited for Trump to start tweeting. The President and First Lady Melania Trump went to Buckingham Palace for a private lunch and welcome ceremony. But could the Queen’s role be more than just ceremonial? Former presidential aide Mary Jo Jackobi and our royal correspondent Jonny Dymond tell us how she, and her horse riding skills, helped change one president’s mind before. Could she do it again?

Producers: Philly Beaumont and Duncan Barber.