The fire started at a factory on Hampton Park Road in Hereford at around 8am.
Some residents in the nearby area have been evacuated to Hereford Leisure Centre on Holmer Road.
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Outbreaks of rain first thing in the east will ease through the morning, but remaining largely cloudy throughout the rest of the day.
Another cloudy day with outbreaks rain or drizzle and mist in the morning. Some heavier bursts of rain possible at first.
Another cloudy day ahead with outbreaks rain or drizzle and mist in the morning.