•
Nigel Le Vaillant as Dr. Paul Dangerfield (Series 1–4) •
Nigel Havers as Dr. Jonathan Paige (Guest Series 4; Series 5–6) •
Nadim Sawalha as Dr. Shaaban Hamada (Series 1–5) •
Bill Wallis as Dr. Nick McKenzie (Series 1–5) •
Amanda Redman as Dr. Joanna Stevens (Series 1–2) • Hilary Lyon as Dr. Roz Parker (Series 2) •
Fiona Victory as Dr. Annie Robbins (Series 3–4) •
George Irving as DI Ken Jackson (Series 1–2) •
Michael Melia as DI Frank Dagley (Series 3–4) •
Jane Gurnett as DI Gillian Kramer (Series 5–6) • Tracy Gillman as DC Nicky Green (Series 1–2) •
Nicola Cowper as DS Helen Diamond (Series 3–6) • Ian Gain as DC Gary Monk (Series 5–6) •
Idris Elba as DC Matt Gregory (Series 6) • Roderick Smith as Sgt. Keith Lardner (Series 1–6) • Mo Sesay as PC Nigel Spenser (Series 1–2) • Eleanor Martin as PC Georgie Cudworth (Series 1–4) •
Julian Kay as PC Tom Allen (Series 5–6) •
Lisa Faulkner as Alison Dangerfield (Series 1–2) •
Tamzin Malleson as Alison Dangerfield (Series 3–4) •
Sean Maguire as Marty Dangerfield (Series 1–2) •
Tim Vincent as Marty Dangerfield (Series 3–4) • Julian Kerridge as Ben Wright (Series 2) • Jemma Green as Anna (Series 3) • Catherine Terris as Julia Caxton (Series 1–2) •
Kim Vithana as Kate Durrani (Series 1) •
Jacquetta May as Liz Moss (Series 3) •
Marcia Warren as Angela Wakefield (Series 3–5) •
Hugh Dancy as Charlie Paige (Series 5–6) •
Lynsey Baxter as Beth Saunders (Series 5) •
Frances White as Molly Cramer (Series 5–6) • Hilary Maclean as Debby Miller (Series 6) A number of famous actors appeared as guest stars: they included
Keith Allen,
Robin Ellis,
Edward Hardwicke,
Anita Dobson,
Brigit Forsyth,
Brendan Coyle,
Richard Hawley,
Michael Elphick,
Rachel Davies,
Helen Baxendale,
David Daker,
Stephen Moore,
Roberta Taylor,
Corin Redgrave,
Hilda Braid,
Jean Marsh,
Denys Hawthorne,
John Duttine,
Owen Teale,
Andrew Lancel,
Jim Carter, Mary Healey,
Tom Bell,
Joe McGann,
Haydn Gwynne,
Simon Williams,
Michelle Holmes,
Phyllida Law,
Miles Anderson,
Robert Pugh,
Elizabeth Bennett,
Roger Brierley,
Colin Baker and
Richard Lumsden. Some future stars who also appeared included
Kevin Bishop,
Adrian Bower,
Hannah Waterman,
Daniel Ryan and Matty Craig. In addition,
Alan Towers, the former main anchor on the local news programme
Midlands Today, appeared as a local television reporter in a few episodes. ==Episodes==