The poll, carried out by Wine Intelligence showed that 13% of regular wine drinkers now spend over £7, compared with just 10% a year ago.
The number of wine drinkers buying Pinot Grigio has increased from 43% three years ago to 56% today, while Chardonnay shoppers dropped from 71% to 63% of the total.
There’s also been a shift from white to rosé drinking.
The survey showed a shift in consumption from on- to off-trade, with 12% saying they don’t buy wine in pubs and restaurants compared with 9% the same time last year.
WSTA chief executive Jeremy Beadles said: “The figures suggest that while consumers may be going out less they are spending more on a bottle of wine to drink at home.
“No doubt some of this stems from price increases driven by tax and other factors, but it also fits into a pattern of consumers enjoying wine at home with a meal instead of going out.”