His father, Dermot Neill, can also take credit. "My father and I used to drive past here the same time every year on our way camping. It was he who said, 'Someone should be growing wine around here. This is perfect wine country.'"
Mr Neill planted his first grapes in 1993 in Gibbston and now owns vineyards in Alexandra and Clyde.
His Bannockburn vineyard, The Fusilier, is named for his father, who served in the Royal Irish Fusiliers.
A paddock beside the vineyard is the setting for his latest project - a pop-up cellar door that runs until January 17. Think straw bales, wine barrels, picnic tables and an imported Airstream caravan.
"I love nothing more than working in my vineyard. It is the opposite of working as an actor.
"Both are a huge part of my life and I wouldn't be without either."