Paul McCartney and Ringo Starr Reunite for Beatles Documentary London Premiere

The two surviving Beatles are back together!

The two surviving Beatles are back together!

Paul McCartney and Ringo Starr reunited at the world premiere of director Ron Howard's documentary, Eight Days a Week, in London on Thursday night.

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The film examines the iconic group's meteoric rise and inexorable link to each other even after their breakup.

"For so long we were a foursome, then we split up, but we were still a foursome," McCartney said while discussing the film. "We were the ex-Beatles."

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"And then when John [Lennon] passed away, it was a very difficult for all of us," he added. "It was a loss that was felt by the world, so you can imagine how it hit us."

"If you like the Beatles, you're gonna love this," Starr said of the doc.

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Meanwhile, McCartney also had a lot to say earlier this year about a more recent collaborative partner of his -- Kanye West!

Watch the video below.