He was educated at Eton College, Magdalene College, Cambridge, where he studied Land Economy, and at the Royal Military Academy Sandhurst where he was awarded the Sword of Honour in 1974, in which year he became a Lieutenant in the Blues and Royals.
He is also a baronet, and the 30th feudal baron of Innes. He is a Liveryman of the Worshipful Company of Fishmongers and a Freeman of the City of London. The Duke lives at Floors Castle, Kelso, Roxburghshire.
In December 2009 he was diagnosed with esophageal cancer and has been receiving treatment for the condition in London.
The Duke has been married twice.