It took 47 fire fighters using breathing apparatus and 6 fire engines to put out a fire at Newland House in the Forest of Dean last night.
The cause of the fire has yet to be identified.
For the full statement from Gloucestershire Fire and Rescue click here
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Weather warnings are in place as Storm Imogen brings winds of up to 80 miles per hour.
Winds of nearly 80mph have been reported at Avonmouth as Storm Imogen arrives in the west.
After a weekend of heavy rain and high winds, the West Country has been told to brace for another bout of bad weather.