United Kingdom, July 8 -- John Cleese fans will see a "different side" to the actor for the first-time ever in a brand-new documentary.

The Fawlty Towers star, 85, has joked viewers will be able to see him as a "decrepit, addled, nasty old geriatric" in new film John Cleese Packs It In, which will follow the star behind the scenes during his final, 23-date European tour.

In the 90-minute documentary, which will be screened in more than 350 cinemas across the UK, John will battle various ailments, encounter chaotic travel and grapple with his own stubborn refusal to stop.

Speaking about the documentary, he said: "For the first time, audiences will see a different side to me - not just the dashing, devil-may-care, devastatingly handsome ...