Firefighters spent more than 1
The City Council said the set was not involved At this time, it was used and no injuries were reported.
All eight Harry Potter films as well as other films, including James Bond, Fast and Furious and the Mission Impossible franchise, were shot in the studios.
The Fire Department Just before 15:00 CET, it was confirmed that the fire was over, although some crews remain at the scene.
A Warner Bros spokesman did not comment on the fire, except to confirm that the public studio tours were untouched and held as usual.
Mark Hancock, who lives nearby, said, "My house is only about 200 meters from the perimeter fence and we have a clear line of sight over gardens so we could see it from one of our windows."
"The smoke It rose high in the air and as I watched, the smoke seemed to get fatter, so we could see the flashing lights of the fire engines reflecting the thick smoke.
"It was still strong around 1am, and when I woke up this morning, it was still smoldering."
He added that it smells and tastes strongly of smoke in the air.
Scene: Alex Pope, BBC News
Since the studio is a closed set, no one can approach the scene.
The studio is located in a housing estate, from which one can smell a faint burning smell.
A woman who lives there said it Around midnight she was awakened by a strong smell and her dog barked and "he never barks".
"The smell was so strong that I thought it was coming out of the house," she said.
Another resident said she spoke to a fireman this morning who told her it was a "fatal fire" shot at the facility near Watford
A Hertfordshire Fire and Rescue Service spokesman confirmed that 15 crew members had been sent to the scene of the fire. This later rose to 18.
He said that an air duct and 12 respirators were used.
The police also had to close the Bridge Road in Leavesden so that the fire department could pull a hose up close channel to the place of fire at its height.