The warmest April in 100 years has brought the fruits out early. Met Office figures show temperatures were three to five degrees warmer than normal and there was half the usual rainfall.
Last week, more than 50 per cent of strawberries sold in supermarkets were expected to be British - increasing to 100 per cent this week.
Last year, by the end of the first week of May, British Summer Fruits - which represents the majority of British growers - had sent just 400 tonnes of British strawberries to supermarkets. This year, growers expected to send four times that quantity by that date - the largest ever for so early in the year.
British Summer Fruits chairman Laurence Olins added: "The warm weather, no frosts and good pollination also means that the fruit is firmer, sweeter and juicier."