Acolon grapes ready to be transported. [Photo/Agencies]

Most of Britain's winemakers are located in Surrey, Sussex and Kent in southeast England and in Hampshire in the southwest. But more have begun to spring up in the north, particularly in Yorkshire and Scotland.

Global warming means "an increase in average temperatures during the summer and autumn, which is good for ripening the grapes" according to Julien Lecourt, head of viticulture research for East Malling Research in Kent.

Scientists also predict a rise in average temperatures in winter and spring, and less rain in summer, which would help to contain diseases like botrytis cinerea and mildew.

Higher minimum temperatures during winter and spring would also mean less dangerous late frost to crops, Lecourt added.