Special Representative for International Trade and Investment
The Special Representative for International Trade and Investment was a member of the British royal family who represented the Sovereign for UK Trade & Investment, which at the time reported jointly to the Foreign Office and the Department for Business, Innovation and Skills. The unpaid role involved representing the United Kingdom at numerous trade fairs and conferences around the world, such as the World Economic Forum in Davos.
Source: Wikipedia — Special Representative for International Trade and Investment (CC BY-SA 4.0)