Guest Stars Tilly Vosburgh as Mrs. Marjorie Gray Christopher Dane as Captain Bjorgsen Alexander Cobb as Ritchie Brignall Claire-Louise Cordwell as Bella Collins Scarlett Archer as Molly Brignall Thomas Aldridge as Smudger Collins Zandra Andersson as Kirsten Bjorgsen Andy McSorley as Glaswegian Sailor