Continuity mistake: When they sing "Tell Me Why" for the TV show there's a shot taken from behind The Beatles. Here as John sings, "Well I'm beggin' on my bended knees" the microphone that was in front of him has now been moved and is facing Ringo. Later in the scene you can see that there are only two microphones on the stage here, one for Paul and George and one for John. (01:16:25 - 01:18:45)
Continuity mistake: The TV producer talks to George and says, "I mean lines ducky, can you handle lines?" and his two assistants are sitting on the window sill in front of the blinds. In the next shot they both have moved over about four feet to their left and are not in front of the window anymore. (00:43:10)
Continuity mistake: When The Beatles first enter their stateroom on the train we see the door as Paul opens it and there's a first-class sign on it. Later Norm and Shake leave the stateroom as the older grumpy gentleman walks in. They never leave but this stateroom is not the same one that The Beatles walked into before as it has another sticker under the first-class sign that reads, "All Seats Reserved". (00:02:55 - 00:06:00)
Continuity mistake: Sitting at their table Paul's grandfather tries to convince Ringo to stop reading his book and if you look closely there's plenty of sugar in the sugar shaker. No one touches it but when the old man says, "So you are a man after all" the sugar shaker is all of a sudden empty. (00:57:00)
Plot hole: When the boys go to get Ringo out of the police station, the other 3 are in front of the police officers and Ringo is way behind strolling along with his camera. When they get trapped in the courtyard they are all together. How did Ringo manage to pass all the policemen with out getting arrested, whilst going slower than everyone else?
Continuity mistake: As the boys leave in the helicopter at the end of the film, it says "BEATLES" on the aircraft's door. The name is split into two different sections to fit on the sliding panels. A few seconds later, one half of the name is missing, leaving only "BEA" on the left-hand side.