Other mistake: When Thomas is uncoupled from Annie and Clarabel, he has Percy's face.
Edward, Gordon and Henry - S1-E4
Other mistake: When Gordon leaves the station, he has two brake coaches, even though express trains are suppose to have one.
Other mistake: At the start Gordon's buffers are crooked.
Thomas, Percy and the Squeak - S6-E21
Other mistake: When Thomas sees Percy at the washdown, Gordon's front and rear bogie wheels are derailed.
Other mistake: In some shots of Percy in the water, his boiler is chipped.
Thomas and the Missing Christmas Tree - S2-E26
Other mistake: In the shot of Donald, (or Douglas) Gordon and Henry, Donald has Edward's face.
Other mistake: When Bill and Ben are pushing each other, Bill has no eyes, Bill and Ben's faces are slanted at the bottom, and Ben's cylinder pipe is crooked along with a tack above Bill's face seen.
Other mistake: In a close-up of Thomas, Annie and Clarabel are nowhere to be seen.
Thomas Comes to Breakfast - S2-E18
Other mistake: The narrator said Thomas was feeling conceited, but Thomas had his sad face mask on instead.
Edward, Gordon and Henry - S1-E4
Other mistake: When Gordon is sent to the siding after breaking down, he passes the set of points needed to cross over to the other line.
Other mistake: When the narrator says that Duncan ran out of coal in the bridge, there is coal in his bunker.
Other mistake: The episode's title in the original PBS Broadcast version is "The Old Iron Bridge" but the bridge was made of wood.
Thomas and the Billboard - S12-E1
Other mistake: In the opening scene when Edward and Henry can be seen going into Knapford, Henry is wearing Gordon's face mask.
Other mistake: When James crashes into the tar wagons, Sticky Tac can be seen on his tender.
Thomas, Percy and the Squeak - S6-E21
Other mistake: When Alicia the mouse is inside Clarabel, she is missing her forepaws.
Other mistake: James passes a green signal, but there are tar wagons ahead.
Other mistake: The narrator says that Thomas' driver puts syrup in the lion, but actually, Thomas fireman puts the syrup on the lion. This is identified by his moustache.
Bradford the Brake Van - S20-E5
Other mistake: A rock is floating in mid-air when Thomas goes up Gordon's Hill.
Other mistake: Oliver's arm is too tall to fit under the bridge.
Other mistake: In a close up of Bertie, he has no driver.
Answer: He was in the water.