story. In this recurring role, he appeared semi-regularly in 101 episodes between 1970 and 1975. The character proved popular enough to return in 1983, first in Mawdryn Undead and in the official 20th anniversary special The Five Doctors. Courtney made his final appearance in the 1989 serial Battlefield (although like many other former cast members, he reprised the role for the charity special Dimensions in Time). He appeared with Jean Marsh in both his first and last regular Doctor Who television appearances. Jean Marsh portrayed the character of Sara Kingdom in Courtney's first appearance, The Daleks' Master Plan, playing his character's sister. In Courtney's final appearance on the show, Marsh portrayed the villainous Morgaine in the Arthurian-inspired Battlefield. Marsh also appeared in the earlier story The Crusade for which Courtney had been considered. Courtney played Lethbridge-Stewart, either on television or in spin-off audio plays, alongside every subsequent Doctor up to and including Paul McGann, as well as substitute First Doctor Richard Hurndall. He did not act in the revived series, although he did so in the spin-off, The Sarah Jane Adventures and appeared in archival footage in Doctor Who proper. While he acted with Tenth Doctor actor David Tennant in the Big Finish audio dramas Sympathy for the Devil and UNIT: The Wasting, Tennant was playing a different character, Colonel Ross Brimmicombe-Wood, on both occasions. Fifteen years after Dimensions in Time, Courtney returned as Lethbridge-Stewart (now, Sir Alistair), freshly returned from Peru, in Enemy of the Bane, a two-part story in the Doctor Who spin-off The Sarah Jane Adventures aired in December 2008, starring Elisabeth Sladen as Sarah Jane Smith. The Sarah Jane Adventures production team intended that Courtney would reappear in the following year's The Wedding of Sarah Jane Smith so that Lethbridge-Stewart would meet the Tenth Doctor, but Courtney was recovering from a stroke and unable to take part. Following Courtney's 22 February 2011 death, Lethbridge-Stewart was written out as having also died; when the Eleventh Doctor wanted to contact him in "The Wedding of River Song", he was informed that Sir Alistair has died some months earlier at his nursing home. The Brigadier was mentioned several times in the series's golden anniversary episode, "The Day of the Doctor", and quoted once; and, with a prominent close-up of his archival portrait, Courtney is the only individual to appear in all the Doctor Who anniversary stories prior to "The