Featuring never before seen footage of the most seminal rock band in music history, BUILDING THE BEATLES is an unprecedented look at the players who have been left out of the story of The Fab Four’s meteoric rise… until now. Journey back to meet Mona Best (mother of the first Beatles drummer Pete Best), Allan Williams, and Sam Leach, each of whom played a crucial role in making The Beatles who they are. Unearthing the pieces of unseen Beatles history, this documentary is a moving testament to the people who changed history forever.
| Actor | Role |
|---|---|
 John LennonSelf (Archive Footage) | Self (Archive Footage) |
 Paul McCartneySelf (Archive Footage) | Self (Archive Footage) |
 George HarrisonSelf (Archive Footage) | Self (Archive Footage) |
 Ringo StarrSelf (Archive Footage) | Self (Archive Footage) |
 Pete BestSelf | Self |
 Allan WilliamsSelf | Self |
| SSam LeachSelf | Self |
 Mona BestSelf (Archive Footage) | Self (Archive Footage) |
 Brian EpsteinSelf (Archive Footage) | Self (Archive Footage) |
 Louise HarrisonSelf | Self |
 Mike PenderSelf | Self |
 Tony CraneSelf | Self |
 Ritchie BlackmoreSelf | Self |
 Freda KellySelf | Self |
 Billy J. KramerSelf | Self |
| TTed TaylorSelf | Self |
 Johnny HutchinsonSelf | Self |
 Larry KaneSelf | Self |
| JJoan LeachSelf | Self |
| GGeoff NugentSelf | Self |