Guest Stars Pamela Salem as Toos Russell Hunter as Uvanov David Collings as Poul Gregory de Polnay as D.84 Peter Langtry as Robot Richard Seager as Robot John Bleasdale as Robot Mark Cooper as Robot David Bailie as Dask Miles Fothergill as S.V.7 Mark Blackwell Baker as Robot Jeremy Ranchev as Robot Brian Croucher as Borg Tariq Yunus as Cass Tania Rogers as Zilda