Firefighters are battling a huge blaze at Golden Triangle Industrial Estate in Widnes tonight.
The fire has been declared a major incident, with workers seeing a large warehouse well alight upon arrival.
It then spread to the roof space and other industrial units.
A statement from Cheshire Fire read: "Four industrial units measuring approximately 100 metres by 30 metres have been affected by the fire.
"The fire has also affected residential addresses.
"Those addresses have either been evacuated or are in the process of being evacuated.
"A 300 metre cordon has been set up.
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"Residents living in and near the area are advised to stay indoors and keep their windows and doors shut as a precaution.
"Motorists are advised to avoid the area.
"The fire has now been sectorised.
"Firefighters have withdrawn from the main seat of fire due to an insufficient water supply.
"Hose reel jets and ground monitors are being used to protect nearby properties in a bid to stop the fire from spreading further.
"One casualty, a man, was given first aid by firefighters before being handed over to the care of paramedics.
"This incident will be updated as more information becomes available."
