According to Gareth Thomas, it took nine takes to film Deep Roy's death scene, because his eyes kept crossing.
The costumes of Geela and Novara are both made from white overalls covered in thin sheets of metallic plastic. Unfortunately the plastic was not very strong or versatile and throughout the episode it can be seen to be in various states of disintegration, dependent on the order of the filmed scenes.
The Decimas suits are repainted Zygon costumes from "Doctor Who".
This episode introduces the colour-coded tracksuits worn by the Liberator crew on planets' surfaces, although only Blake and Avon are seen wearing them. (Cally is carrying hers when she tries to convince Blake to let her teleport down.) Vila's and Gan's debut in Seek-Locate-Destroy (1978) and Jenna's in Duel (1978).
At the end of the episode, Blake sets course for Centero, as he had done at the end of Time Squad (1978). The ship finally arrives there in Seek-Locate-Destroy (1978).