Lady Hatt's Birthday Party - S5-E4
Continuity mistake: When George crashes, the Fat Controller falls into the ditch head first, but in the following shot he is sinking feet first.
Visible crew/equipment: When the Fireflies form the engine, the end of the set is visible in the distance.
Visible crew/equipment: When Bill runs beside Boco, you can see a camera moving out of the shot. (Visible in HD full screen version).
Visible crew/equipment: When Thomas races through Elsbridge station, you can see a hand drop in and out of the shot on the top right.
Visible crew/equipment: In the shot of Thomas rolling backwards onto the turntable, look left very carefully, and you'll see a camera tripod visible. Fullscreen version only.
Revealing mistake: Dried-up glue is visible around Rusty's face during the line, "Right, we'll find one tomorrow."
Continuity mistake: After Stepney's driver tells Stepney to speed up, Caroline is nowhere to be seen.
Revealing mistake: In a shot of 2 vans singing "Pop Goes Old Ollie" you can see a spider crawling on the right side of the left van in the screen.
Santa's Little Engine - S17-E18
Revealing mistake: At one point, the shading effect on Thomas' whistle is not rendered properly, so it appears silver instead of gold.
Saved You! - S12-E10
Continuity mistake: After he is rescued by Thomas, Toby's face changes size between shots.
Continuity mistake: Throughout the episode, rust stains disappear and reappear on Duncan's front buffers.
Visible crew/equipment: In the opening shot of the restored version, studio equipment is visible in the top-left corner.
Wrong Road - S2-E22
Revealing mistake: When Gordon says, "I am Gordon! Stop! Stop!", his eyes are wonky.
Visible crew/equipment: When Percy passes the Coaling plant, a camera shadow is visible.
Edward, Gordon and Henry - S1-E4
Visible crew/equipment: When The Fat Controller is looking at the goat, a hand is visible in the steam.
Edward, Trevor and the Really Useful Party - S3-E16
Visible crew/equipment: When Bertie is talking to Trevor, in one shot of Trevor, studio equipment is visible in the top left hand corner.
Continuity mistake: When Murdoch returns to the shed in the last scene, Emily is there too, but in the last two shots, she disappears.
Revealing mistake: Salty is missing his rear lamp in the first shot at the docks and a hole is visible where it should be.
Other mistake: At the start Gordon's buffers are crooked.
Springtime for Diesel - S21-E1
Audio problem: Trevor has Stanley's whistle sound when he crosses the level crossing.
Answer: Butch the breakdown truck must have pulled Gordon's tender all the way up the rails so the breakdown train can reach it and also Butch helped to get Gordon close to the winch.