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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Thursday will start dry, with sunny spells. Showers will develop through the morning.
Most parts starting dry with sunny spells, but scattered showers will again develop.
The Glee club in Birmingham sued 20th Century Fox for infringement of the ‘Glee’ trademark.