- 2: The number of step-siblings he has — Camilla's children Tom Parker-Bowles and Laura Lopes.
- 10: The number of other patronages he holds, including those for WellChild and the Rugby Football Union.
- 3: The number of weeks he spent walking in the Antarctic for charity in 2013.
- 5: The number of nannies he had. They were Barbara Barnes, Olga Powell, Jessie Webb, Ruth Wallace, and Tiggy Legge-Bourke.