Plot hole: In 'The Foretelling', it is said that Richard IV reigned for "13 glorious years" with a caption showing 1485-1498. 'The Black Seal' starts on St. Junipers' Day, 1498, but Blackadder spends 12 months locked up with Mad Gerald. So when the Royal Family are finally murdered it is actually 1499.

Other: In the episode "Beer" when Edmund leaves Melchett's house to prepare for the evening he walks away and bumps into the wall causing it to wobble.

Continuity: In Back and Forth, the 'modern' Edmund makes off with the helmet we saw Georgius put on the wall. But in the next shot of the Roman Blackadder and Georgius, the helmet is still where Georgius left it.

Visible crew/equipment: Just after Edmund, Baldrick and Percy get up from sitting by the fire, and before the line "The Black Adder will be King next", the shadow of the boom mike can be seen on Baldrick's hat - it moves upwards quickly so can be hard to spot.

Visible crew/equipment: Back and Forth: When Blackadder first goes into the time machine to get the items from Baldrick, and the door goes up, you can see a crew member pushing the door closed, wearing a red shirt.

Visible crew/equipment: During the conversation between Blackadder and Baldrick, as Baldrick explains what he spent the £400.000 on, we can see the shadow from the boom mike moving on Blackadder's fur coat.

Continuity: When McAngus empties his bag on the table and the head falls on it we see the back of the head is turned against the camera. When it cuts to a close up of the head the head is facing in the direction of the previous camera take. When it cuts again the back of the head is turned against the camera.

Continuity: After his interrogation, Darling is able to run out of the doctor's office (albeit hobbled by the chair he is tied to) despite having been shot in the foot and having been seen visibly limping earlier.

Continuity: When George (dressed as Blackadder) is in the cellar and about to go upstairs, he has one cup on his tray, however when he arrives upstairs there are two cups on the tray.

Revealing: When Percy is holding the 'Green' in his hands, light of the green reflects on the wall behind Blackadder. However the way Percy is holding the 'green' in front of Blackadder, Blackadder's shadow should be on the wall behind him, but it isn't. It's obvious green lighting is used to light up the back wall.

Continuity: When Blackadder calls for Baldrick to fetch his incredible strong ale you see Melchett holding his beer down. When it cuts the ale is up at his chest.

Visible crew/equipment: When Blackadder goes to see The Wise Woman, as she gets out of bed and starts talking you can see the boom mic moving above Blackadder's head.

Revealing: When Queen Elizabeth arrives in disguise, Blackadder welcomes her and is about to open the door to the closet, but you can see the door is being pushed up from the inside, probably by a crew member.

Visible crew/equipment: When Black Adder enters the General's office after he returns from the hospital for the first time, the shadow of the camera can be seen as it peers up from the desk.

Continuity: Just after Edmund has "locked" the door on Queenie, it comes open when he walks away from it. There is even the sound of the door opening.

Continuity: Edmund throws his drink into the cupboard under the stairs, leaving a stain on the floor. Yet when he directs Queenie there a few seconds later, the floor is unstained.

Continuity: During the introduction, the snake tries to get away from someone who is supposedly Blackadder. He gets the snake. It's head is above a black tile. There is then a close-up of the snake, Blackadder wags his finger at it. It is now above a white tile.

Continuity: When Blackadder, Queenie and Nursey are all comforting Melchett, there is a shot from the side view of Melchett, he is holding his head with his left hand. Then there is a shot from behind Melchett, he still has his hand on his head but when the shot returns to the side, Melchett no longer has his hand on his head.