The fire has now been extinguished, with the building left charred and gutted by the blaze.
Lancashire Police said the cause of the fire is not known at this stage.
7 aftermath pictures show the extent of damage to the building.
7. Aftermath of the fire on Milbourne Street in Blackpool
Aftermath of the fire on Milbourne Street in Blackpool. Photo: Kelvin Lister-Stuttard
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