Selina Cadell was born 12 August, 1953 in Smithfield, London. She is an English actress who is best known for playing Mrs. Tishell in the ITV's comedy drama series Doc Martin and Josephine in Life Without George. She has also been in Full Stretch, Jeeves and Wooster, Lab Rats, Lewis, Love, Nina, Midsomer Murders, The Bill, The Catherine Tate Show, In and Out of the Kitchen, The Lady in the Van, Cardiac Arrest, Upstairs, Downstairs, Father Brown, Sensitive Skin, The Brief, Murphy's Law, The Amazing Mrs Pritchard, Inspector Lynley Mysteries, My Hero, Always and Everyone, As Time Goes By, People Like Us, EastEnders, Jonathan Creek, Pie in the Sky, Kavanagh QC, Doctors, The Complete Guide to Parenting, Bodger and Badger, French and Saunders, New Tricks, Van der Valk, Casualty, Foyle's War, Hannay, Jury, Casonova, Birds of a Feather, Bremner, Bird and Fortune, The Vicar of Dibley and Snow Cake.
She is the younger sister of the late actor Simon Cadell and granddaughter of actress Jean Cadell.