Sir Clive Alderton KCVO PC (born 9 May 1967) is a British diplomat and courtier who has served as Private Secretary to King Charles III and Queen Camilla since 8 September 2022.

As Private Secretary to the Sovereign, he is the senior operational member of the Royal Households of the United Kingdom.

He previously served them in their capacity as Prince of Wales and Duchess of Cornwall, as their private secretary since 2015.

[3] He joined the Foreign Office in 1986 and subsequently served in various diplomatic posts in Poland, Belgium (European Union), Singapore and France.

[2] He served in that position until the Prince's accession to the throne as King Charles III on 8 September 2022, following the death of his mother, Queen Elizabeth II.