Harry John Newman Treadaway (born 10 September 1984) is an English actor. His credits include Control (2007), City of Ember (2008), Fish Tank (2009), Pelican Blood (2010), Flight of the Storks (2012), Mr. Mercedes (2017-2018), The Crown (2019), Star Trek: Picard (2020), Deceit (2021), and The Chemistry of Death (2023).