He has appeared in three science fiction programmes — as the second actor to portray Travis in Blake's 7 and also as Borg in the Doctor Who story The Robots of Death.
During his time on Doctor Who, he directed six serials, including three fondly-remembered adventures The Sea Devils, The Green Death and his personal favourite The Robots of Death, which was also his last involvement with the series.
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Kaldor City is a human city of the future on an unspecified alien world, created by Chris Boucher for the Doctor Who serial The Robots of Death broadcast in 1977, and reused in his Past Doctor Adventure Corpse Marker in 1999.