Factual error: About ten minutes into the film, in the scene where there is a staff meeting deciding whether they should strike, the junior assistant talks about how much tea breaks cost the company each week. He says something along the lines of 'each member of staff has 18 toilet visits a day due to drinking tea. At four minutes a time this contributes to 72 minutes each day lost. This means we lose 15 hours a week due to visits to the toilet'. Even if the staff worked seven days a week, this would only amount to 8.4 hours lost.
Continuity mistake: On the coach trip into Brighton, when Mr. Lewis is following in his car, the shadow is on the lefthand side of the car. However, when he is shown behind the bus, the sun has changed sides, giving the shadow on the other side. In the same sequence, he is seen travelling on a dual-carriageway. But when he is shown waving at Myrtle at the rear of the coach, he is shown travelling along a three-laned road.
Continuity mistake: A suited and booted chap with a flyaway mop of copper hair can be seen walking down the street when Bernie first pulls up outside the Spanners' house. Soon after, the same man can be seen across the road from the parked motorbike. A few seconds later, there he is again, back walking down the street behind Vic.
Continuity mistake: On the coach on the way to Brighton, look at the road they are on when Mr Lewis is chasing them. It turns to the left of the screen. In the next shot inside the coach the road is different and turns to the right. Also, when Mr Lewis waves when he is behind the coach you can see a shadow. But when Vic puts his arm around Myrtle the shadow disappears.
Continuity mistake: When Sid Plummer confronts W.C. Boggs in his office, they hear a commotion outside and go to the window to see what it is. The view from the window shows Vic Spanner being spanked over his mother's knee. In the next shot, Vic is rallying the pickets outside the main gate and his mother and the other women aren't there, although they turn up later in the same scene.
Continuity mistake: When Mr Plummer is testing the toilet in Mr Boggs' office, Mr Coote is holding a toilet roll holder in his right hand and the lid in his left hand. In close-ups of Mr Coote, he is holding the toilet roll holder and lid by his upper body, but in other shots, he is holding the holder and lid by his waist.
Continuity mistake: When Myrtle comes out of the hotel bathroom and says "'At long last' he said, under his breath", Myrtle takes her hands off her hips twice.
Continuity mistake: When Bernie revs his motorbike outside Mrs Spanner's house, there is a lady wearing a green dress walking down the street and nearly walks out of shot when we cut to Mrs Spanner shouting to Bernie out of the window. When we cut back to Bernie and Vic on the motorbike, the lady in the green dress can be seen walking past once again.
Continuity mistake: When Sid says "Just because I've had a bit of luck for a change" to Benny in the betting shop, Benny takes the cigar out of his mouth, but when the camera is behind Sid in the next shot, the cigar is back in Benny's mouth and he takes it out a second time.
Continuity mistake: When Fred is speaking to Chloe during the lunch scene, Fred's plate is right in front of him on the table but when Chloe says "I mean of Sid", we cut back to Fred and his plate has now moved further up.
Continuity mistake: When Sid goes over to the Joey's cage after he says his first chirp, Joey can be seen on the right on the perch, but in a close-up, he is now on the left.