Cox had continued in his roles with Wines of Chile and as Master of the Vintners’ Company despite undergoing chemotherapy.
Announcing his death, Cox’s wife Lynne Whitaker said: “I don’t need to tell you what an exceptional man he was. I have been immensely proud of the way he has tackled his disease. He has insisted on carrying on with his normal life as far as was humanly possible, and the medical staff have been astounded at what he has been able to achieve.”
Cox worked in the drinks trade all his life, starting out at his family’s company Matthew Clark in 1972 after six months working in Cognac.
Last year he was named Personality of the Year at the International Wine Challenge.
Cox will be greatly missed for his charm, professionalism, exuberance and his inimitable dancing style.
A memorial service is to be held in the next six weeks.