|Other names||Alex Arnold|
Arnold made his professional debut in the fifth and sixth series of the E4 teen drama Skins, playing the keen metalhead Rich Hardbeck. He got the role while still in the sixth form through the open audition process in London. In September 2011, he starred in the music video “Death Cloud” by Cloud Control. Directed by the award-winning Luke Snellin, it was shot in Spain over two days.
He starred in a two-part ITV drama called A Mother's Son, written by Chris Lang and first screened in September 2012. In 2013, he appeared in the BBC Three zombie drama In the Flesh, and in the third series of crime drama Vera. He also earned a starring role as Adam in the television series What Remains. In 2015, he joined the cast of Poldark, a new BBC series based on The Poldark Novels.
|†||Denotes works that have not yet been released|
|2011–2012||Skins||Rich Hardbeck||16 episodes|
|2012||A Mother's Son||Jamie||2 episodes|
|2013||In the Flesh||Alex||1 episode No.1.1|
|2013||Vera||Sam Bishop||1 episode No.3.1|
|2013||What Remains||Adam Moss||4 episodes|
|2014||Silk||David Cowdrey||1 episode No.3.1|
|2015||Poldark||Jim Carter||4 episodes|
|2016||Death in Paradise||Matt Holt||1 episode No.5.6|
|2018||Save Me||Luke||6 episodes|
|2022||Signora Volpe||Sasha Pavlenko||1 episode No.1.3|
|2016||David Brent: Life on the Road||Pog|
|2017||My Cousin Rachel||Young Lad|
|2017||Film Stars Don't Die in Liverpool||Anaesthetist|
|2020||The Outpost||SGT Christopher T. Griffin|
|TBA||The Last Breath†||Brett||Post-production|
|2013||Mickey & Michaela Bury Their Dad||Mickey|
|2015||The Son||The Kid|
|2017||What is Transference And Why It Matters||Ryan|
|2022||The Chromakey Man||Dan|
|TBA||Meet Me by the Sea†||Oliver||Completed|
|2011||Death Cloud||Cloud Control|
|2019||The Races||Sports Team|
|2014||Four Minutes Twelve Seconds||Nick||Hampstead Theatre, London|||
|2015||Luna Gale||Peter||Hampstead Theatre, London|||
|2015||Crushed Shells and Mud||Vince||Southwark Playhouse, London|||
|2016||Shopping and Fucking||Robbie||Lyric Theatre, London|||
|2019||Bitter Wheat||Roberto||Garrick Theatre, London|||
- Births, Marriages & Deaths Index of England and Wales, 1916–2005 A45B
- "The new Skins cast revealed - BBC Newsbeat" – via www.bbc.co.uk.
- "Alexander Arnold plays Rich - Channel 4 - Info - Press".
- "Cloud Control 'Death Cloud' by Luke Snellin on Promo News".
- "Hermione Norris and Martin Clunes to front new ITV Drama". Radio Times. 14 May 2012. Retrieved 18 May 2012.
- Lynn (26 October 2012). "Royle Family actor Ricky Tomlinson to star in new BBC3 zombie drama, In The Flesh". Unreality Primetime. Archived from the original on 28 October 2012. Retrieved 3 November 2012.
- "David Threlfall leads all-star cast in Tony Basgallop's compelling new BBC One drama What Remains". BBC. 17 January 2013. Retrieved 29 July 2013.
- Jeffery, Morgan (11 April 2014). "Poldark: new BBC One drama adds '70s series star Robin Ellis". Digital Spy. Retrieved 25 April 2014.
- "The Salvation". spierfilms. Retrieved 29 July 2013.
- "Alex Arnold previews Rich's episode". digitalspy. Retrieved 6 May 2012.
- "Circuit House's Open Mic". vimeo. Retrieved 11 September 2012.
- "Circuit House". facebook. Retrieved 15 October 2012.
- "Art Explosion for Bristol Autism Project". ecojam. Archived from the original on 30 July 2012. Retrieved 30 April 2012.
- TotallyLayouts.com. "Hello, Sweetie".
- "FOUR MINUTES TWELVE SECONDS: FULL CAST ANNOUNCED". Hampstead Theatre. Retrieved 9 June 2023.
- Billington, Michael (23 June 2015). "Luna Gale review – to whom does a baby really belong?". The Guardian. Retrieved 9 June 2023.
- Hitchings, Henry (7 October 2015). "Crushed Shells And Mud, theatre review: Teen spirit in the apocalypse". Evening Standard. Retrieved 9 June 2023.
- Lukowski, Andrzej (13 October 2016). "Shopping and Fucking". Time Out. Retrieved 9 June 2023.
- "BITTER WHEAT". Nimax Theatres. Retrieved 9 June 2023.