Question: The actor who played Andy Holt in Hollyoaks is also known as a professional what?

Context articles: David Atkins (actor)
Warren Brown (actor)
Andy Holt (Hollyoaks)
Duncan James
Charlie Wernham
Eric Muenter
Scott Adkins
David Holt (footballer, born 1936)
Jeff Rawle
Darren Jeffries

David Atkins is an English actor best known for his role as Rob Edwards in the British television soap opera "Hollyoaks", who he played from 2011 to 2012.
 Atkins also appeared in two episodes of "Doctor Who" in 2010.
 In 2016 he was cast in the semi-regular role of Tyler Green, a young police constable, in the BBC daytime soap, "Doctors", which he played until February 2017.
Warren Brown (born 11 May 1978) is an English actor and former professional Thai boxer, well known for his roles as Andy Holt in teen soap opera "Hollyoaks", Lee Hibbs in the three-part BBC drama series "Occupation" written by Peter Bowker and as DS Ripley in acclaimed BBC crime drama "Luther".
Andrew "Andy" Holt is a fictional character from the British Channel 4 soap opera, "Hollyoaks", played by Warren Brown.
Duncan James (born Duncan Matthew James Inglis; 7 April 1978) is an English singer, actor and television presenter.
 He is best known as a member of the boy band Blue from 2000 to 2005 and again from 2009 following their reformation.
 He is also known for playing Ryan Knight in "Hollyoaks".
Charlie Wernham (born 3 October 1994) is an English comedian and actor who is known for auditioning on the second series of the ITV talent show "Britain's Got Talent" and for his role as Robbie Roscoe in "Hollyoaks".
 He also played Mitchell in "Bad Education" and has appeared in "The Inbetweeners", "School of Comedy" and "Some Girls".
Eric Muenter (1871–1915), also known as Erich Münter, Erich Muenter, Erich Holt or Frank Holt, was a German-American activist and would-be assassin whose secret attacks on America on behalf of Germany foreshadowed future terrorist attacks.
 Although employed as a German professor at elite American universities, he was actually a spy and a "fanatic in the clandestine service of the Imperial German government."
 As a professor at Harvard University, he poisoned and killed his wife.
 He appeared again as Cornell University professor Frank Holt who contacted the German spy network which undertook to sabotage US aid to the war in Europe against Germany.
 In 1915, he planted a bomb which exploded in the US Capitol, shot Jack Morgan, son of financier J.P. Morgan in his home, and predicted the bombing of a steamship bound for England before committing suicide under custody of police.
 His activities along with those of other Germans were played up by the press as "Hun barbarity" anti-German feelings rose in the years as America eventually entered the war with Germany.
Scott Edward Adkins (born 17 June 1976) is an English actor and martial artist who is best known for playing Russian prison fighter Yuri Boyka in the 2006 film "" and its following two sequels: "" (2010) and "" (2016) and Casey Bowman in Ninja and its sequel .
 He is also known for playing Bradley Hume in "Holby City", Lucian in "Doctor Strange", Kiley in "The Bourne Ultimatum" and John in "Zero Dark Thirty".
 Adkins has also appeared in "EastEnders", "Hollyoaks", "Doctors" as well as starred in many direct-to-video films.
David Holt (born 3 January 1936), also known as Davie Holt, is a Scottish former international footballer who played as a left back.
 During his playing career, Holt made over 300 appearances in the Scottish Football League for Queen's Park, Hearts and Partick Thistle between 1957 and 1970.
 Holt, who earned five caps for Scottish national side, also represented Great Britain at the 1960 Summer Olympics.
Jeffrey Alan Rawle (born 20 July 1951) is a British actor, known for playing the long-suffering George Dent in the news-gathering sitcom "Drop the Dead Donkey".
 He also played Silas Blissett in "Hollyoaks" from December 2010 until 2012.
 Rawle returned to "Hollyoaks" in 2016.
Darren Jon-Jeffries (born 2 March 1982) is a British actor, writer, and presenter best known for his portrayal of Sam "O.B." O'Brien in Channel 4 soap-opera "Hollyoaks".
 He is also known for presenting Freshly Squeezed and Red Bull Rivals on Channel 4, plus The British Soap Awards and Text Santa for ITV2.