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A producer who has worked with David Attenborough has been filmed threatening to perform a citizen's arrest as he hysterically told a family to "get ready to die".

Horrifying footage shows Fergus Beeley - who claims he worked with the legendary environmentalist on top BBC series like Planet Earth: The Future - leaning into a parked car and aggressively shouting obscenities.

The road rage attack unfolded after Simon Gale, 33, was driving along the M27 with his wife, Louise, son and mother-in-law.

He was involved in a minor crash with another car and his wife got out to amicably exchange details.

But Beeley pulled up behind them in a different car and flew into a "raving state".

His mother-in-law filmed him calling the family da"w******" and telling them to "get back in the car before you die".

(Image: SWNS)

As Mr Gale gets out the car, a woman says: "You said you want us dead,"

"I do want you dead," says an agitated Beeley replies. "Put your hands on the car and get ready to die, this is a citizen's arrest."

He then begins pointing at the woman and the boy, saying: "You're under a citizen's arrest, you're under a citizen's arrest, and I tell you what, you are, too."

Upset and angry, the woman calls back: "That's my 11-year-old-son, what's he done?"

Unfazed, Beeley continues to shout: "You're under under a citizen's arrest."

The passenger asks a passer-by to act as a witness, who then bravely tries to stand up to Beeley.

(Image: SWNS) (Image: SWNS) (Image: SWNS)

"I got punched by her", Beeley claims, an allegation the woman instantly denies.

"You didn't see her on the motorway with dangerous driving," he continues.

"He needs a doctor, somebody needs to call the doctor", the woman says.

When the witness asks Beeley why he is involved, he claims he was just "trying to stop a death on the motorway."

"I'm not going to quieten down, because this is a citizens arrest," Beeley continues, before the footage ends.

Mr Gale had been driving down to Portsmouth with his wife, Louise, mother-in-law and son at 11.30am on Saturday.

He also claims Beeley grabbed hold of him around the throat and "raised his fist in a threatening manner".

He said: "It was quite a scary thing. He flew into an absolute raving state. When he got out the car he demanded, 'Do you know who I am?', and when I said I didn't he grabbed me and pushed me against the car."

(Image: Daily Mirror) (Image: Daily Mirror) (Image: Daily Mirror)





Mr Gale added that it wasn't until after police had shown up to mediate the incident, and insurance details had been exchanged, that the family saw Beeley's name and realised who he was.

Mr Gale said: "My son was so scared by it that he actually ended up sleeping in our room last night. He's very shaken.

"Luckily none of us are harmed in any way - but we're still quite shaken by it. We're definitely going to be a bit more cautious from now on."

Beeley's Linkedin profile suggests he and David Attenborough have been working together for over 25 years.

They have also worked together on the Planet Earth: The Future documentary shows.

A BBC spokesman said: "Fergus has not worked with the BBC for at least 10 years, when he last worked with us he produced some content for our Natural History Unit in a freelance capacity, and he is not a BBC employee."