The story was repeated in its entirety on Friday evenings on BBC1 in July 1971,[REF] achieving ratings of 2.9, 3.0, 3.4 & 3.9 million viewers respectively [REF].
Reviewing the original DVD release in 2002, DVD Talk's J. Doyle Wallis gave the serial three out of five stars, describing it as a "nice exploit" with "pretty neat villains", but criticising the little the Doctor had to do, despite it being his introduction [REF].