Catherine Steadman (born 8 February 1987) is an English actress and author, best known for playing Mabel Lane Fox in series 5 (2014) of ITV drama Downton Abbey. Her debut novel, the psychological thriller, Something in the Water was published in June 2018 by Simon & Schuster UK and Penguin Random House USA. Steadman trained at the Oxford School of Drama and made her screen debut playing Julia Bertram in the ITV adaptation of Mansfield Park opposite Billie Piper, James D'arcy, Rory Kinnear and Michelle Ryan. Since then she has appeared in television dramas such as the CBC/Showtime co-production The Tudors playing Joan Bulmer, Holby City, Law & Order: UK, Missing, Lewis, Quirke alongside Gabriel Byrne, Fearless opposite Helen McCrory, and Victoria. Most notably she played Nurse Wilson in the ITV drama Breathless, Maggie Lewis in Tutankhamun and Mabel Lane Fox in the 5th series of Downton Abbey. She has also appeared in several comedy series such as The Inbetweeners, Fresh Meat,Trying Again and Bucket.

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