Sir Peter Jackson has insisted he didn't want to "sanitise anything" about The Beatles with his documentary series, 'Get Back'

Discussing how the series shows the late George Harrison's brief departure from the band - which was off-limits in 'Let It Be' - Peter told The Guardian newspaper: “Anyone thinking this is going to be a whitewash, think again.

“I didn’t want to hold back or sanitise anything, but there was a very positive reaction from everyone, even if some of them said parts of it were stressful to watch.”

One moment that left Peter "stunned" was Sir Paul McCartney discussing the late John Lennon and the presence of his wife-to-be Yoko Ono in the recording studio.

Paul says in the clip: “It’s going to be such an incredible sort of comical thing, like, in 50 years’ time, you know, ‘They broke up because Yoko sat on an amp.’”

Peter said: “I was stunned when I first heard that. Of course, they didn’t break up because of Yoko, but Paul can do an interview today and say it wasn’t and people will take it with a grain of salt. You can’t do better than [having] a contemporary source.”

The 60-year-old director admitted his "mind boggles" still at the thought there was over 60 hours of unseen footage about one of the world's biggest bands that had never seen the light of day until now

He said: “I just can’t believe it exists. But then I can’t believe any of it – that the Beatles let Michael shoot all that footage, that it sat in a vault all this time…

“What other band in the 60s or 70s allowed themselves to be shot in such an intimate way? There isn’t another. And then I got to edit it. The whole thing boggles my mind."

And Peter hopes the series will make the musical legends "seem young again".

He said: “Now, they are our grandparents or great-grandparents. But here, John and Ringo are 28, Paul is 26 and George is 25, and you never once feel this footage is 52 years old. I’ve always thought their music transcends generations, but this will make them seem young again.”