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Katherine Kelly is an English actress. She rose to prominence with her portrayal of Becky McDonald on the ITV soap opera Coronation Street (2006–2012), for which she received multiple awards, including the British Soap Award for Best Actress (2009) and the NTA for Best Serial Drama Performance (2012). Kelly's subsequent television roles include Lady Mae in Mr Selfridge (2013–2014, 2016), DI Jodie Shackleton in Happy Valley (2016), Miss Andrea Quill in Class (2016), Jane Lowry in Strike Back (2017–2018), DCI Natalie Hobbs in Criminal: UK (2019–2020), Elizabeth Sutherland in Gentleman Jack (2019–2022), DI Karen Renton in Liar (2020), Sally Wright in Innocent (2021), and Angela van Den Bogerd in Mr Bates vs The Post Office (2024). Katherine Kelly was born in Barnsley, South Yorkshire. She grew up in both South Yorkshire and the United States. She has strong links with The Lamproom Theatre in Barnsley, established in 1998 by her father John (who is originally from Castleisland, County Kerry, Ireland), and has regularly supported fund-raising events held there. She trained at the Royal Academy of Dramatic Art with fellow students Meredith MacNeill, Leo Bill, Elliot Cowan, Laurence Fox, and actor and novelist Anna Hope, graduating in 2001.

How Are You? It's Alan (Partridge)
as Katrina

The Hack
as Sheridan McCoid

In Flight
as Jo Conran

The Crow Girl
as Sophia Craven

Protection
as DCI Hannah Wheatley

Inside No. 9: The Party's Over
as Self

Mr Bates vs The Post Office
as Angela van den Bogerd

The Long Shadow
as Emily Jackson

Ruby Speaking
as Vicki

Let Her Go
as Absent Princess

Hotel Custody
as Narrator

Last Train to Christmas
as Paula

Bloods
as George

Kat and the Band
as Liz Malone
Affection
as Pauline

Criminal: UK
as Natalie Hobbs

Official Secrets
as Jacqueline Jones, MI6 Agent

Gentleman Jack
as Elizabeth Sutherland

Dirty God
as Lisa

Cheat
as Leah Dale

Flack
as Brooke

Murdertown
as Presenter

Innocent
as Sally Wright

The Great Celebrity Bake Off for Stand Up To Cancer
as Self - Guest

Liar
as DI Karen Renton

Class
as Miss Quill

HIM
as Hannah

The Night Manager
as Permanent Secretary

The Sound of Music Live!
as Baroness Elsa Schraeder

The Secret River
as Mrs. Webb

Happy Valley
as DI Jodi Shackleton

Inside No. 9
as Lynne

The Last Witch
as Alice Lister

The Guilty
as Claire Reid

Mr Selfridge
as Lady Mae Loxley

Best Possible Taste: The Kenny Everett Story
as Lee Everett-Alkin

National Theatre Live: She Stoops to Conquer
as Miss Hardcastle
Odd One In
The National Television Awards Backstage Live

Coronation Street: Romanian Holiday
as Becky McDonald

Live from Studio Five
as Self
The Justin Lee Collins Show
as Self
Coronation Street: Out of Africa
as Becky Granger

The Visit
as Julie

Mischief Night
as Junkie Jane

Life on Mars
as Auntie Heather

The Royal
as Tina Binnington

Sons & Lovers
as Suffragette Speaker - Emily

Silent Witness

Coronation Street
as Becky Granger / Becky McDonald
Number 10