Stationary traffic on the A14 in Northamptonshire westbound between Junction 2-3. Pic: Sean Byrne

An accident in treacherous conditions has closed the M1 and 24,000 homes are without power after overnight snowstorms hit the UK.

A lorry crash has closed all three lanes of the M1 southbound prior to junction 19, with Leicestershire Police telling Sky News it was likely caused by the wintry conditions.

There are tailbacks stretching several miles with people trying to return to work or from Christmas breaks.

Police tweeted: "There has been an accident involving a lorry. Unfortunately, all lanes are currently blocked. Police and Highways are aware and are currently dealing. Please make alternative travel arrangements. Updates to follow."

A lorry has also jack-knifed on the M5 at junction 11a.

The A46 was closed in both directions between the A435 and A422 near Alcester. There are reports an HGV left the carriageway amid difficult driving conditions before the road was reopened.

There is disruption on the A14 westbound in Suffolk between junctions 47 Elmswell and 45 due to flooding.

Source: SkyNews