The director of a new and authorised Led Zeppelin documentary, which features "unprecedented access" to the three surviving members of the band, has said that the film has been completed.

Becoming Led Zeppelin director Bernard MacMahon, who previously made country music documentary American Epic, first announced in May 2019 to mark the band's 50th anniversary the previous year.

"Becoming Led Zeppelin is a film that no one thought could be made," MacMahon said in a statement on Monday. "The band’s meteoric rise to stardom was swift and virtually undocumented.

"Through an intense search across the globe and years of restoration of the visual and audio archive found, this story is finally able to be told."

Becoming Led Zeppelin is the first time that the legendary band have taken part in a documentary in 50 years and are said to have given MacMahon "unprecedented access" for the film.

It will feature new interviews with guitarist Jimmy Page, singer Robert Plant, and bassist John Paul Jones, with rare archival interviews with the late John Bonham, who died in 1980.

A release date for Becoming Led Zeppelin has yet to be confirmed.