Brian Orrell

An alien distress call draws the Doctor and Peri to Earth, 1985, where they uncover a Cyberman plot to change the course of history.

Pollitt: "You know the nuts and bolts of our policy?" Les Cannon: "To penetrate the unions. To use all sorts of stratagems, manoeuvres, illegal measures, evasions, subterfuges, to carry on Communist activities inside them at all cost."