A cordon remains in place with surrounding roads closed, the police said, and the public are advised to avoid the area.
Mel Evans was one of those asked to leave her home.
“We had the police knocking on our door this morning at about half past four, evacuating us from our building because there was a fire nearby, and they needed to get people out,” she said.
“We were taken to an office nearby to get in the warm and the dry, and the police have been very good at keeping us updated.
“I think they were scared the fire was going to spread, but they managed to get on top of it quite quickly.”