Television:
* Doctor Who (2010-2012): Atwell played the role of "The Doctor's Wife", a character with a fascinating connection to the Doctor. She was a fan favorite and her performance received much praise.
* The Crown (2016-2017): In the first two seasons of this award-winning Netflix series, Atwell played the role of Princess Margaret, the Queen's younger sister. She captured the complex personality and rebellious spirit of the Princess.
* The Pursuit of Love (2021): Atwell starred as "Fanny Logan" in this BBC adaptation of Nancy Mitford's classic novel.
* The Serpent (2021): She played "Susannah, a central figure in this miniseries about the real-life case of Charles Sobhraj.
Film:
* Captain America: The First Avenger (2011): Atwell played "Peggy Carter", Steve Rogers' love interest and a key figure in the early days of the S.H.I.E.L.D. organization. This was a breakout role for her and she reprised the character in various Marvel projects.
* Cloud Atlas (2012): Atwell had a supporting role in this ambitious science fiction film, playing "Nurse Noakes" in one of the interwoven narratives.
* The Personal History of David Copperfield (2019): She appeared in this adaptation of the Charles Dickens novel, playing "Betsey Trotwood".
* The King's Man (2021): Atwell had a supporting role in this historical action film.
This list highlights some of her most well-known projects. She has been involved in numerous other works, including theatre productions and smaller films.
It's worth noting that Atwell's filmography is still growing, and she continues to take on interesting and diverse roles.