An agitated Dame Helen Mirren — dressed as the Queen — surfaced on a London street to try to get a bunch of drummers to pipe down after they disrupted her performance, the U.K.’s The Telegraph reports.

Mirren told the group to “shut the f**k up,” according to some media reports. The incident was caught on video — not great video, mind you, as it’s shot from a distance and Mirren can’t be heard.

Mirren “had stormed out of the nearby Gielgud Theatre, where she was playing the Queen, in full costume to demand that the drummers stop disturbing her performance,” the publication reports. “Footage of the incident filmed by comedian Chris Dangerfield [shows] Dame Helen Mirren gesticulating to the drummers and appearing to shout at them.”

The paper adds: “The scene, as described by Dame Helen to The Daily Telegraph, played out on Saturday evening as the noisy band of carnival-style entertainers promoted London’s As One In the Park gay music festival while Dame Helen was on stage in ‘The Audience,’ for which she earned an Olivier Award last week.”

“It was towards the end of the first half, as she was discussing her 1992 ‘annus horribilis’ with John Major, played by Paul Ritter, that the incessant thudding outside became increasingly hard to ignore.”

The video shows Mirren gesturing toward the group, and then the drumming stops.

Said parade organizer Mark McKenzie: “Not much shocks you on the gay scene. But seeing Helen Mirren dressed as the Queen cussing and swearing and making you stop your parade — that’s a new one.”

The report adds: “Mr. McKenzie claimed that Dame Helen had even given one of the parade promoters a regal tap around the head.”

Said Mirren: “I’m afraid there were a few ‘thespian’ words used. They got a very stern royal ticking off but I have to say they were very sweet and they stopped immediately.

“I felt rotten but on the other hand they were destroying our performance so something had to be done.”

Here’s the clip: