The original 16mm master negatives for the series are no longer believed to exist, or at least their whereabouts are currently unknown. The distributors only hold 1 inch video transfers taken from the masters and duplicates in the 1980s. This means that there could be some material missing from installments in circulation (the first two episodes are known to be affected by cuts). However, London Weekend Television retain the majority of their 16mm transmission prints which may contain any omitted footage, whilst some effects work and title sequence material (on 35mm film) are known to survive.
How's the arm?
Dr. 'Tiger' Ninestein: I'll live.
Sergeant Major Zero: I was afraid of that.
The end credits are accompanied by a game of Tic-Tac-Toe played by the Zeroids (in blue), and Zelda's Cubes (in red). The winner of the game differed from episode to episode.