Growing demand for his tipples means Tesco has now added one of them to its own range, and you can buy it for £9.
Graham first launched his wine range, called GN, three years ago as part of a collaboration with New Zealand winery Invivo.
His Sauvignon Blanc was the first wine in the range, and it has proved so popular that it is now in six countries worldwide.
Although just 12,000 bottles were launched in 2014, more than 1.5million bottles are expected to be on the shelves this year.
The GN range also includes a Shiraz and Rosé, which are not yet available in the UK.
James Davis MW at Tesco said: “We are delighted to be adding GN Sauvignon Blanc to our portfolio.