A Warwickshire Fire and Rescue service spokesman said: “It wasn’t a big fire. It was confined to that building which was a safe distance from the restaurant.

“The kitchen staff wouldn’t have been affected and it didn’t prevent them from opening in the evening.”

Although the cause of the fire is currently unknown, firefighters opened an investigation.

The Gas Board was called, and a fire service spokesman said: “There is nothing to suggest it was anything other than an accident.”

The Baraset Barn did not wish to comment.