Kate Smurthwaite is a left wing, feminist, atheist, polyamorous comedian and activist. 

She performs stand-up comedy all over the UK and around the world. She is currently touring her 14th one-woman show, Bitch, which previewed at the Edinburgh Fringe Festival. She performs at major clubs including Manford’s, The Stand, The Comedy Store and Piccadilly Comedy Club as well as alternative venues such as Quantum Leopard, What The Frock, Bring Your Own Baby and The Poodle Club.


In 2013 she won a Three Week's Editor's Choice Award naming her one of the ten best things about the Edinburgh Fringe. In 2014 she was nominated for the Emma Humphreys Memorial Prize for campaigning against violence against women.

Kate has appeared as a panelist on Question Time as well as The Big Questions, This Morning, BBC News, Sky News, Woman's Hour, The Today Program, The Moral Maze and Newsnight. She has a regular column in New Internationalist magazine and has also written for The Guardian, The Independent, The Telegraph, The Mirror, Cosmopolitan, Stylist and New Statesman as well as Have I Got News For You and BBC3’s BAFTA-winning The Revolution Will Be Televised.


Internationally she is best-known as the star of a viral video circulated under the name Atheist Bitchslap. In 2012 she made a program for BBC Radio 4's Four Thought series on sexism in comedy and in the comedy industry.


Kate's campaigning work has included almost a decade as spokesperson for Abortion Rights UK and working with female asylum seekers through Women For Refugee Women and Women Asylum Seekers Together. Kate also teaches comedy through City Academy, City Lit and Skyros Holidays.