Deliberate mistake: Edmund's "recollection" of seeing Henry Tudor includes the footage that the audience saw at the beginning; however, Edmund wasn't present when this happened, and thus should not be able to recollect it. Moreover, this scene occurred after Henry had escaped and was in safety, altering the details of the Battle of Bosworth Field. Clearly, the footage was added for the audience's benefit, to be able to link the injured Henry to the introductory scene at the start of the episode.
Blackadder (1986)
1 deliberate mistake in season 1 - chronological order
Continuity mistake: 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.
Blackadder: We are reprieved. It is a triumph for stupidity over common sense.
Baldrick: Thank you very much.
Blackadder: As a special reward, Baldrick, take a short holiday. [Pauses for a second.] Did you enjoy it?
Trivia: Stephen Fry, who played Lord Wellington, ad-libbed most of his lines.
Question: Who played the balladeer and why was Blackadder trying to kill him?
Answer: Tony Aitken played the Balladeer. Blackadder wants to kill him because he annoys him and usually sings songs about what a fool he is.
Captain Defenestrator