
Anna Maxwell Martin (born Anna Charlotte Martin; 10 May 1977), sometimes credited as Anna Maxwell-Martin, is an English actress. She won two British Academy Television Awards, for her portrayals of Esther Summerson in the BBC adaptation of Bleak House (2005) and N in the Channel 4 adaptation of Poppy Shakespeare (2008). She is also known for her roles as DCS Patricia Carmichael in BBC One crime drama Line of Duty (2019–2021) and Kelly Major in Code 404 (2020–2022). From 2016-2022, Martin starred in the BBC comedy Motherland, for which she was nominated for the BAFTA Award for Best Female Comedy Performance.
Martin's theatre work includes the role of Lyra Belacqua in the production of His Dark Materials (2003–2004) at the National Theatre.
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Heartstopper Forever
2026 · as Sarah Nelson

Fackham Hall
2025 · as Mrs McAllister

Becoming Jane
2007 · as Cassandra Austen

The Worst

The Personal History of David Copperfield
2019 · as Mrs. Strong

Philomena
2013 · as Jane

The Duke
2021 · as Mrs. Gowling

Freefall
2009 · as Mandy

Alan Partridge: Alpha Papa
2013 · as Janet Whitehead

The Night Watch
2011 · as Kay Langrish

Gavin & Stacey: A Fond Farewell
2025 · as Self

White Girl
2008 · as Debbie

Enduring Love
2004 · as Penny

On the Edge
2027 · as (voice)

National Theatre Live: 50 Years on Stage
2013

The Wind in the Willows
2006 · as Gaoler's Daughter

Birthday
2015 · as Lisa

Motherland: Last Christmas
2022 · as Julia