series continued, Aldred would have remained in her role until the expiry of her contract midway through the following season. Ace was to be written out of the series in Ice Time, an Ice Warrior story written by Marc Platt. Aldred returned as Ace in 2019 for a webcast trailer promoting the blu-ray release of Season 26. In 1999, McCoy agreed to reprise his role as the Doctor in officially-licensed Doctor Who audio adventures produced by Big Finish, with Aldred also returning the following year. As of 2022, both McCoy and Aldred continue to make regular appearances in Doctor Who audio releases and associated spin-offs. The pair also returned in 2001 for the BBC webcast production, Death Comes to Time. Doctor Who eventually returned to television as a BBC Wales production in 2005, helmed by Russell T Davies. In 2022, Aldred made a special guest appearance as Ace in the revived series, alongside Janet Fielding as Tegan Jovanka, for the BBC's centenary – "The Power of the Doctor" – which saw the end of Jodie Whittaker's tenure as the Thirteenth Doctor and was the last story produced entirely by BBC Studios before entering a co-production deal with Bad Wolf. McCoy also made a surprise cameo as a manifestation of the Seventh Doctor. Cast notes The part of Karra in this serial is played by Lisa Bowerman, who is now more familiar to fans as the voice of Bernice Summerfield in the Big Finish Productions audio dramas. She is also a director of many Big Finish productions, and also returned to the Doctor Who series proper when she provided voice-acting work for the animated special Dreamland in 2009. This serial features guest appearances of the comedians Gareth Hale and Norman Pace, and actress Adele Silva (as an 8-year-old, in her first television role). See also Celebrity appearances in Doctor Who. Broadcast and reception There was no direct indication given to the public that this was to be the final regular instalment of Doctor Who; however, unlike previous years' final episodes, this one featured no announcement in the closing credits that the programme would return the following year. Reviewing Survival, David J. Howe and Stephen James Walker described it as "a very good story", with a script that contains "highly imaginative and original concepts". They also expressed admiration for the special effects used for the Cheetah People's planet, calling them "superb electronic