Peter Mark Andrew Phillips is a British businessman. He is the son of Anne, Princess Royal, and Captain Mark Phillips, the eldest grandchild of Queen Elizabeth II, and a nephew of King Charles III. At the time of his birth, he was 5th in the line of succession to the British throne; as of February 2024, he is 18th.

Anne, Princess Royal is a member of the British royal family. She is the second child and only daughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh, and the only sister of King Charles III. Anne was born 3rd in the line of succession to the British throne and is now 17th, and has been, since 1987, Princess Royal, a title held for life.