The 8th Earl of Carnarvon is the son of Henry Herbert, 7th Earl of Carnarvon, and Jeanie Margaret Wallop (1935–2019). His mother was born in Big Horn, Wyoming, to Oliver Wallop, who was the brother of the 8th Earl of Portsmouth. The 8th Earl of Carnarvon was educated at Eton College and St. John’s College, Oxford.

He succeeded to the title of Earl of Carnarvon when his father passed away on September 11, 2001. He lives in Highclere Castle with the 8th Countess of Carnarvon, and they run the estate and business together. He is a keen horseman and sits on the board of the HHA (Historic Houses Association). He also takes a considerable interest in conservation and farming and has been an investor in start-up technology businesses.