Regular •
James Bolam as Jack Ford (48 episodes; all series) •
James Garbutt as Bill Seaton (39 episodes; series 1–3) •
Jean Heywood as Bella Seaton (39 episodes; series 1–3) •
John Nightingale as Tom Seaton (39 episodes; series 1–3) •
Edward Wilson as Billy Seaton (35 episodes; all series) •
Malcolm Terris as Matt Headley (34 episodes; series 1–3) •
Susan Jameson as Jessie Seaton/Ashton (30 episodes; all series). Jameson is Bolam's wife off screen. •
Madelaine Newton as Dolly Mather/Ford/Seaton (30 episodes; series 1–3) •
Basil Henson as Sir Horatio Manners (25 episodes; series 1–3) •
Geoffrey Rose as Arthur Ashton (18 episodes; series 1–3) •
William Fox as the Duke of Bedlington (13 episodes; series 2–3) •
Isla Blair (5 episodes, series 2) and
Lois Baxter as Lady Caroline (15 episodes, series 3–4) •
Rosalind Bailey as Sarah Lytton/Headley (24 episodes; series 2–4)
Supporting •
Michelle Newell as Mary Seaton (6 episodes; series 1) •
Noel O'Connell as Young Tommy (6 episodes; series 2–3) •
Catherine Terris as Miss Laidlaw (7 episodes; series 2–3) •
Vernon Drake as hotel porter (7 episodes; series 2–3) •
Roger Avon as Stan Liddell (5 episodes; series 2–4) •
Ian Cullen as Geordie Watson (4 episodes; series 2–4) •
Bobby Pattinson as Eddy Morton (4 episodes; series 2–3) ==Episodes==