Do not travel unless it is an emergency - that was the message from police in Norfolk this morning as snowdrifts and high winds caused chaos on the roads overnight.

Norfolk Constabulary last night urged workers to arrange to work from home or not go into work if possible, with forecasters warning the country 'is not out of the woods yet'.

Strong winds battered the county overnight, and combined with snowdrifts and freezing temperatures this brought roads to a standstill and will this morning leave those who do brave the commute facing travel disruption for the fourth day in a row.

MORE: Check our live traffic map before you travel

Police said snowdrifts were 'engulfing vehicles without warning' and told drivers to stay at home if possible.

In Shipdham, just before 11pm yesterday, police closed the A1075 because of the danger. Several Breckland police officers were snowed in on the road, along with snow ploughs and members of the public.

MORE: Police officer pictured up to his knees in snow on A140

Breckland Police said the snow drifts were waist-height and added they were 'working together with our 4x4 emergency team to abstract them all safely into the warmth'.

An hour later, the officers were free but police tweeted they had been snowed in for 'several hours'.

Crews at the East of England Ambulance Trust (EEAST) were also affected by the snow. Rob Adams, duty locality officer for EEAST in central Norfolk tweeted a plea to anyone with a tractor to help him reach a colleague.

He said: 'I'm not sure super spade can get me to my trapped supervisor. Please anyone in central Norfolk with a tractor call the ambulance service in an appropriate way and give us help.'

A number of farmers, owners of 4x4s, and others have turned out over the last few days to help free trapped motorists and clear roads.

In public transport, First Bus said it would be operating but with changes, and advised passengers to check its Twitter feeds for updates.

MORE: 'They were legends' - Ambulance staff travelled for hours to get into work and stayed late as region gripped by heavy snow and ice

While train operator Greater Anglia lifted ticket restrictions until Sunday - meaning passengers could travel earlier or later than book. They warned they were running a reduced service and journeys could be delayed, cancelled or altered.