Linus William Roache is a British actor. He is known for playing Executive ADA Michael Cutter in the NBC dramas Law & Order (2008–2010) and Law & Order: Special Victims Unit (2011–2012). More recently, Roache played Ecbert, King of Wessex in Vikings from 2014 to 2017. He was nominated for a Golden Globe Award for playing Robert F. Kennedy in RFK (2002) and won a Satellite Award for Best Supporting Actor (TV) for his role as Ralph Wigram in The Gathering Storm (2002). His film appearances include Priest (1994), The Wings of the Dove (1997), Pandaemonium (2000), Batman Begins (2005), Non-Stop (2014) and Mandy (2018). In 2018 and 2020 he had a recurring role in the final two seasons of Homeland.