The prince who works with David Manning and The Duke and Duchess of Cambridge is in what succession to the British throne?
David Manning:  He has since been appointed to the Household of TRH The Duke and Duchess of Cambridge and Prince Harry. Prince Harry:  At the time of his birth, he was third in line of succession to the British throne, after his father and elder brother, but is currently fifth in line after his father, his elder brother, and his nephew and niece, George and Charlotte.
fifth