Heads Of Beef / Klub Katz - S1-E11
Factual error: In "Klub Katz" the captian yells "Iceburg, Iceburg, on the starboard side." But when you see the iceburg and the ship, the iceburg was about to hit the bow of the ship.
Anarchy in Royston Vasey - S2-E5
Visible crew/equipment: When Hilary Briss and Samuel are sitting in Hilary's living room, Hilary says, "Are you alright Samuel? You look a bit nervous." When Samuel says, "Of course I'm nervous." there is a microphone at the top of the screen, above his head.
Plot hole: At the end of the episode when Tommy has change the witches into little statues, he's a werewolf. Then he runs to Stacey and changes back. However, in Hello Nasty it takes a Haiku from Merton to change Tommy back.