William James Wilde (15 May 1892 – 10 March 1969) was a British professional boxer and world boxing champion from Wales.
 Often regarded as the greatest British fighter of all time, he was the first official World Flyweight Champion and was rated by American boxing writer Nat Fleischer, as well as many other professionals and fans including former boxer, trainer, manager and promoter, Charley 'Broadway' Rose, as "the Greatest Flyweight Boxer Ever."
 Wilde earned various nicknames such as, "The Mighty Atom," "Ghost with the Hammer in His Hand" and "The Tylorstown Terror" due to his bludgeoning punching power.
 While reigning as the world's greatest flyweight, Wilde would take on Bantamweights and even Featherweights, and knock them out.
 As well as his professional career, Wilde participated in 151 bouts judged as 'newspaper decisions', of these he boxed 70 rounds, won 7 and lost 1, with 143 being declared as 'no decisions'.
 Wilde has the longest recorded unbeaten streak in boxing history, having gone 104-0.
Mick Leahy (12 March 1935 – 5 January 2010) was an Irish-born British professional boxer.
 Born in Cork, he became a British citizen in 1961 and lived the rest of his life in Coventry.
 In a career which spanned from 1956 to 1965, Leahy won the British Middleweight title and fought such names as László Papp and Nino Benvenuti.
 However, he is perhaps most notable for beating Sugar Ray Robinson, who is frequently cited as being the greatest boxer of all time.
David Allen (born 21 March 1992) is British professional boxer.
 He has fought 16 times and his record stands at 12 wins, 3 defeats and 1 draw.
 In 2016 he took on Dillian Whyte and Luis Ortiz, two of the well known names in heavyweight boxing.
 On May 27, 2017, Allen took on Jamaica's Lenroy Thomas for the Commonwealth title.
 Allen lost on a split decision with close scorecards reading 115-114, 114-115, 115-114 in favour of Thomas.
Marlon Reid (born 17 April 1982) is a British professional boxer who was born in Swindon and currently lives in Bath.
 After reaching the ABA final against George Groves as an amateur Reid made his debut as a professional boxer on 17 October 2008 against Gary Cooper and won on points.
Scott Welch (born 21 April 1968) is a retired British professional boxer.
 As an amateur, Welch became one of the UK's ABA Heavyweight Champions.
 He travelled the world as a professional boxer, winning the Southern Area belt, the British, Commonwealth and WBO Intercontinental titles.
Steve Ward (born c. 1956) is a British professional boxer, notable for being the oldest professional boxer in the world.
 He was confirmed as such in 2011 at age 54.
 He lost the distinction in 2015, when an older fighter competed in a professional bout, but regained it later that year when he fought professionally at 59.
 His original boxing career lasted from 1977 to 1987.
 He made a comeback in 2010, and as of 2015 had no plans to retire.
David Deron Haye (born 13 October 1980) is a British professional boxer who has held world titles in two weight classes.
 He is the first British boxer to reach the final of the World Amateur Boxing Championships, where he won a silver medal in 2001.
 As a professional he became the first British boxer to become a unified cruiserweight world champion in 2008, winning three of the four major world titles, as well as the "Ring" magazine and lineal titles.
 In the same year he moved up to heavyweight, and became the WBA champion in 2009 after defeating Nikolai Valuev, who had a world record 9 in height and 99 lb weight advantage on Haye.
Yousuf Mohamed Ibrahim Bhailok (born September 1956) is a well known British businessman in Lancashire and the former general secretary of the Muslim Council of Britain.
 Bhailok made his money through property investments and development.
 In April 2016, it was reported that Bhailok was preparing a bid for parts of the former British Home Stores chain which was placed in administration earlier in April.
James Frederick DeGale, {'1': ", '2': ", '3': ", '4': "} (born 3 February 1986) is a British professional boxer.
 He has held the IBF super-middleweight title since 2015, having previously held the British super-middleweight title from 2010 to 2011, and the European super-middleweight title from 2011 to 2012.
 As of May 2017, he is ranked as the world's best super-middleweight by "The Ring" magazine and the Transnational Boxing Rankings Board, and third by BoxRec.
 As an amateur, DeGale represented Great Britain at the 2008 Olympics, winning a gold medal in the middleweight division.
 By later becoming IBF champion, he became the first British boxer ever to have won both an Olympic gold medal and a professional world title.
Ambrose Mendy (born August 1954) is a British boxing manager, advisor and sports agent.
 He has managed and/or advised Nigel Benn; James DeGale; Chris Eubank Junior; Lloyd Honeyghan & Errol Christie among others during a career in boxing that started in the late 1970s.

Question: Who is a well known british professional boxer? 
Answer: James DeGale