Anton Rodgers and Frances White are the only actors to appear in every episode, next is Paul Venables who appears in 38 out of the 39 episodes. The character Zoe appears in every episode but is played by two different people (Eve Matheson and Lesley Dunlop).
Dorothy 'Dot' Burgess, Zoe's Mother:
I dropped her on her head once when she was a baby, unfortunately not hard enough.
Each episode is named after a song. Most are from musicals, which both Alec and Zoë enjoy, and some later ones are 1950s-60s popular songs.