Kirsty Goring, the marketing director of Wiston Estate Winery explained the secret of their success at SussExport - a day organised by Arundel and South Downs MP Andrew Griffith to support businesses across the county to export.
You can hear what she had to say in this video.
She was one of the guest speakers at the event - which was also attended by the Secretary of State for International Trade Liz Truss.
