The chances of beating the 37.1 Celsius (98.8 Fahrenheit) recorded in Cheltenham, central England, in August 1990 were "better than 50-50", meteorologists said.

Sunday "could be the hottest day in history," said Michael Dukes of the PA Weather Centre forecasting bureau.

"I think we have every chance of breaking the record."

Millions of Britons have been flocking to beaches, lakes and parks in recent days as the traditionally tepid summer weather heated up to levels more normally seen in Europe's far south.

On Saturday, London sweltered in its hottest day since 1911 as temperatures hit 36 Celsius (96.8 Fahrenheit), although more northerly places were slightly cooler.

There has been widespread speculation that the country could even experience its first-ever recorded temperature above the 100 FahrenheitCelsius), a record that would, however, chill the hearts of the nation's bookmakers.

They face potential payouts in the million of pounds (euros, dollars) if the heavily betted-on mark is reached.

In contrast, pub and bar owners are enjoying a happier time -- an extra three million pints of beer are expected to be drunk this weekend as Britons quench their thirst, according to estimates.

TERRA.WIRE