'This partnership enables us to ... further redefine how premium spirits are experienced online.'
Next year marks the racing outfit’s debut in the FIA Formula 1 World Championship.
The two appointments are a result of Gallot's decision to move on after 11 years.
Gregan started his career in New Zealand's wine industry fresh out of university in 1983.
Geary has been interim CEO for the last two months.
Gregor has been a non-executive director at the company for the last year.
The changes will be applied across South Africa's export markets from next year.
Diageo chair Sir John Manzoni said Rishton brings 'a track record of creating sustainable, long-term…
The revised structure of the senior executive team will kick in next month.
The company is preparing for a name-change from 1 January.
