Crews were called to Pelican Oils on Barracks Road on Sandy Industrial Estate at 10:20pm last night (Monday).
The cooking oil recycling centre contained 60 tonnes of waste oil and 500 tonnes of kerosene.
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Duller conditions moving back towards the coast through the morning, leaving a mainly dry day with warm sunny spells.
Showery outbreaks of rain will become more widespread through Thursday with heavy and locally thundery downpours possible.
Pollen: West Midlands Update