Polar air from beyond Greenland and Iceland has seen temperatures plummet across the UK, with the mercury dipping below zero in many regions.

As the Border region braces itself for more wintry conditions, the Met Office has issued a second yellow weather warning for snow and ice.

The warning has been issued between 00:05 and 12:00 on Friday 9 February.

Temperatures are expected to fall overnight after some rain and hill snow, allowing ice to form on untreated roads and pavements.

Heavy sleet, hail and snow showers will follow meaning accidents on icy surfaces are possible.

Motorists and are advised to drive carefully and those using public transport should be aware that bus or train services may be cancelled.

The Met Office said two to five centimetres of snow may accumulate above 100 metres, with some expected on lower ground too.

Met Office meteorologist Martin Bowles said:

Over a few days we have been getting weather that is generally coming from northern parts, with some weather coming from Canada.

Martin Bowles, meteorologist, Met Office

He added that some of the colder temperatures experienced lately had also come from Scandinavia.