Brown was born in Warrington, England. After appearing in two episodes of the television series Shameless, Warren played the evil Andy Holt in Channel 4's Hollyoaks. Despite being 27 years old at the time, it was said his youthful good looks helped him win the role of the student. He studied at the University of Salford. Brown was nominated for a number of awards for his performance in the show including Best Villain, Most Spectacular Scene, and Best Exit at the 2006 British Soap Awards. Brown's character Holt met his demise in February 2006. Brown has competed at world-level in Muay Thai and is a two-time World Champion. Brown won a role in the short-lived ITV show Jane Hallin the summer of 2006. This was followed in March 2007 by his role as Tommo in ITV's Mobile. Also in 2007 he starred as Chris in one episode of Casualty. In September 2007 he starred in the second series of BBC Three's Grownups, playing barman Alex Salade and has played the part since. In the 2009 Comic Relief Special of Two Pints of Lager and a Packet of Crisps, which was a crossover between Grownups, Two Pints and Coming of Age, he played Alex again. In 2008, Brown performed the voiceover for the film trailer of Gomez: A True Story, based on the life of boxer Michael Gomez and starring Emmerdale's Kelvin Fletcher. In October 2008, Brown played the role of Marky in E4's zombie drama Dead Set. In November 2008, he appeared in Casualty, but not playing the same character as he did in 2007. In 2009 Brown appeared in the three part BBC Iraq war drama Occupation, alongside James Nesbitt and Stephen Graham Brown has appeared in two episodes of The Bill playing Jake Clegg, who was a part of the operation of trafficking young girls illegally. These episodes were titled "The Forgotten Child". From May 2010, he appeared as the regular character of DS Justin Ripley in the BBC drama Luther, a role that he reprised in June 2011 in the second series of Luther. Brown left the series in 2013. Brown appears in the deadmau5 music video for the song "I Remember", also starring Stephen Graham, Aston Kelly, Greg Walsh and ex-Coronation Street actress Emma Edmondson. In October 2010, Brown appeared as Matt in the BBC drama Single Father. In February 2012, he played one of the main characters in the BBC drama seriesInside Men. He appeared as a member of Bane's Mercenary Security in The Dark Knight Rises, the third instalment of Christopher Nolan's Batman trilogy. First broadcast in August 2012, Brown starred as PC John-Paul Rocksavage in the four-part BBC police dramaGood Cop. From 2017, he plays Sergeant Thomas "Mac" McAllister in, the British-American action television series, in the sixth series and second revamp of Strike Back opposite Daniel MacPherson. The eighth series finished filming and aired on February 2020.
