BRITONS have been warned of an “extreme freeze” overnight as the Met Office said temperatures could plunge even further than Tuesday’s 10-year low.

Temperatures fell to minus 17.1C in the Highlands, the coldest recorded since January 2010, when the mercury dropped to minus 22.3C.

The Met Office said wide areas of Scotland were likely to get down into double figures and sub-zero temperatures were expected across the whole of the UK overnight last night.

Grahame Madge, a spokesman for the Met Office, said: “We’re going to see colder temperatures tonight, whether we get down below [minus 22.3C] I doubt, but it will probably be a bit colder than Tuesday night.

“The cold will begin to ebb away but it will be slow and quite erratic and there are still wintry hazards. We’ve got potential for some more snow, heavy rain and also freezing rain.”