Brian Hayles wrote for radio, television and film, including such series as The Archers, United! and Z Cars. Hayles' work on Doctor Who included adventures for the first three Doctors. His first story was the well-remembered 'The Celestial Toymaker', and after his historical adventure 'The Smugglers', Hayles wrote 'The Ice Warriors' - introducing the creatures for which he is best remembered. He wrote three further Ice Warriors stories, the last two featuring the Third Doctor and set on the feudal planet Peladon. Brian Hayles died in 1978.