The Liver Birds "Man is the dog, and woman is the bone. He eats the best of you, and buries the rest of you, and when his dish is empty—he'll dig you up again." This would be the last series with Beryl; as Polly James explained: "The reason I left the programme in the end was that I felt I was in danger of caricaturing what was already a pretty outrageous character." Producer Sydney Lotterby had to find a new leading actress to keep the series going after Polly James' departure. In 1971 he'd replaced Pauline Collins with Nerys Hughes, and Hughes herself
Polly (Doctor Who) Troughton), and they continue to travel with him. In "The Highlanders" (1966–67), Polly and Ben are joined on the TARDIS by Jamie McCrimmon (Frazer Hines). Eventually, the TARDIS finds its way back to 1966 London (in "The Faceless Ones") on the very day Ben and Polly had left (although about a year had passed for them). They decide to remain behind to resume their lives without disruption as the Doctor and Jamie travel on. Polly was never given a last name in the series. According to production notes, she was meant to be Polly Wright, but this was not used