During the program events from around the world were shown, perhaps the Beatles sequence is the most popular of this TV show. Among the guests, singing the chorus during the performance, were members of The Rolling Stones, Eric Clapton, Marianne Faithfull, Keith Moon and Graham Nash.
The Beatles were live at 8:54 GMT (that's amazing! How did they get John out of bed so early?!)
... and a special hand-clap for the Australians that got up at 4.50 AM ! ☺
More details can be found on Wikipedia : https://en.wikipedia.org/wiki/Our_World_(TV_special)
and here : https://www.honeysucklecreek.net/other_stations/cooby_creek/our_world.html
... I'm more interested in showing the actual film, which speaks for itself.
Colour TVs weren't as common as today back in the 60s, so the program was broadcasted in black and white, however, in 1995, a colourised version was created for TV special The Beatles Anthology, using colour photographs taken at the scene as reference.
Some of the outtakes / base-track records can be found in the bootlegs "Magical Mystery Tour (Back to the basics)" available to download for free here: http://octaner.blogspot.co.uk/2015/12/magical-mystery-tour-back-to-basics.html