The Beatles leave for Australia

From the Pathe Newsreels Archives, labeled “Unissued / Unused material – London Airport”.
Here’s the description of this clip:
The Beatles (John Lennon, Paul McCartney and George Harrison – Jimmy Nicol stands in for Ringo Starr on this trip for he is ill.) get out of coach at London Airport and wave to the fans on airport roof. LS Fans lining the roof of the airport building. LS BOAC Boeing taxiing VS The Beatles arriving at the aircraft and they pose on steps with the air stewardess, they wave and clown about and before entering the aircraft and they welcome fellow passengers aboard. LS Boeing 707 lifting off and disappearing into sky taking the Beatles on their Australian tour.
(Orig.Neg.) Old record suggests material dates from around 07/06/1964.