A Scotland Yard spokesman was reported to have said: "We were contacted by a member of the public reporting screams coming from the premises. Officers attended and established nothing untoward was taking place."
Tempest-Walters explained the scene caused by saying, "Eva (her character) is a teenager with rage issues and in the final scene everything pours out. It's a really emotional moment and by the end I was giving it my all.
"I'm really sorry if I scared people, but at least it's good to know my performance is believable."