Some councils are running low on salt as snow continues to fall across the country.
More disruption is expected to businesses, transport services and schools after the latest snow fall hit south Wales, north Devon, Gloucestershire and Wiltshire.
The worst affected place was the Midlands where 4ins of snow fell and the Highways Agency has warned drivers to take extra care. The Met Office also said more bad weather is on its way and the Midlands, West Country and southern and eastern Wales are set to be hit by further heavy snow.
As salt supplies run low some councils have said they will only treat major roads.
Cheshire-based supplier Salt Union said it is struggling to cope with demand and staff were working round the clock.
A spokesman for the company said: "We have been operating 24 hours a day, seven days a week since the beginning of January and are extracting 30 million kilos per week but the unexpected and unusual weather means that, even working at this level, demand is outstripping supply."
To cope with the demand Cleveland Potash, the Highways Agency's second supplier, is importing salt from Spain.
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