Theo Rycroft was named deputy private secretary to the King in 2025 Pascal Le Segretain/Getty ImagesHe has already made waves. According to Charlotte Griffiths at the Mail on Sunday, Rycroft has become ‘this great white hope for King Charles’. Describing the man as an ‘incredibly talented diplomat’, Griffiths credits him with smoothing relations between the King and President Donald Trump on the US state visit. Eagle-eyed royal watchers may well have spotted him accompanying Prince William to Notre Dame, when the future king reunited with Donald Trump at the grand re-opening of the ancient cathedral. But who is Theo Rycroft, and how did he come to be one of the nation’s most influential men?