On graduating from the National Film and Television School in March 2013, Arnold embarked on his first TV project, directing two episodes of the final series of BAFTA-winning channel 4 show, Misfits.
[6][failed verification] The premiere episode had consolidated viewing figures of 11.4 million viewers, a benchmark previously hit in 2019 with Cleaning Up,[7] a project Arnold developed with writer Mark Marlow and Sister Pictures.
"[10] Billie Schwab Dunn, writing for Metro, praised the show saying, "Time is a necessary lesson on the British prison system and a masterclass in acting.
The show starred Lesley Manville, David Morrissey and Adeel Akhtar who won the 2023 BAFTA for Best Supporting Actor for his role as Andy Fisher.
[13] Sherwood was described as "an adeptly executed crime drama, driven by tight, deliberate plotting, genuinely unforeseen turns, and a palpable friction between its two detective protagonists.”[14] In 2022/23, Arnold directed all seven episodes of George Kay's The Long Shadow for ITV.
[18] The document contains the breakout stories of over a hundred, working directors, across a variety of disciplines including TV, film, animation, documentary and commercials.