"Big Mistake" is the 308th episode of Casualty and the 24th episode of the 15th series.
Credits[]
Regular cast
- Charlie Fairhead - Derek Thompson
- Josh Griffiths - Ian Bleasdale
- Lisa Duffin - Catherine Shipton
- Penny Hutchens - Donna Alexander
- Patrick Spiller - Ian Kelsey
- Holly Miles - Sandra Huggett
- Barney Wolfe - Ronnie McCann
- Colette Kierney - Adjoa Andoh
- Finlay Newton - Kwame Kwei Armah
- Mel Dyson - Michelle Butterly
- Dan Robinson - Grant Masters
- Andrew Bower - Philip Bretherton
- Spencer - Ben Keaton
- Tom Harvey - Kieron Forsyth
Guest cast
- Gavin - Michael Cole
- Maria - Rae Osborne
- Greig Croft - Robin Soans
- Lynne Croft - Tessa Wyatt
- Michael Croft - Anthony Allen
- Bob Watanabe - Eija Kusuhara
- Pete Binnington - Jamie Glover
- Mr Borowski - Malcolm Peake
- Fiona Litton - Jacqueline King
- John Williams - Derren Litten
- Mark Shaw - Christian Durham
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