William James Wilde was a Welsh professional boxer who competed from 1911 to 1923. He held the IBU world flyweight title in 1916, the EBU European flyweight title twice; firstly in 1914 and again from 1916 to 1917, the BBBofC British flyweight title in 1916 and the National Sporting Club's British flyweight title from 1916 to 1918.
Peter Buckley is a retired English journeyman boxer who competed from 1989 to 2008. Although he most notably fought around the Featherweight division, he competed at a number of weight divisions up and down on either side.
Khalid "Kal" Yafai is a British former professional boxer who held the WBA super-flyweight title from 2016 to 2020. As an amateur, he represented Great Britain at the 2008 Summer Olympics and won a silver medal at the 2010 European Championships as a flyweight. As of January 2021, he is ranked as the world's fourth best active super-flyweight by The Ring magazine and the Transnational Boxing Rankings Board, and sixth by BoxRec.
Thomas Essomba is a Cameroonian-British professional boxer who has held the European bantamweight title since May 2023. He previously held the Commonwealth flyweight title from 2015 to 2017. As an amateur, he represented Cameroon at the 2012 Olympics, reaching the round of 16 of the light-flyweight bracket.
Sid Smith was an English professional boxer who competed from 1907 to 1919. He was the first officially recognised BBBofC British flyweight champion, holding the title from 1912 to 1913, and was also recognized by the International Boxing Union as the world flyweight champion in 1913.
Joseph Robert Loscalzo, known professionally as Midget Wolgast, was a world flyweight boxing champion.
Lee Haskins is a British former professional boxer who competed between 2003 and February 2020. He held the IBF bantamweight title from 2015 to 2017, and the IBF interim title in 2015. At regional level, he held the Commonwealth flyweight title in 2006; the British super-flyweight title from 2008 to 2009; the Commonwealth super-flyweight title in 2009; the British bantamweight title in 2013; and the European bantamweight title twice between 2012 and 2015.
Andrew Langley, better known as Andy Bell, is a British former professional boxer who competed from 2004 to 2010. He held the British super flyweight title in 2008.
Usman "Uzzy" Ahmed is a British former professional boxer who competed from 2006 to 2016. He challenged once for the British and Commonwealth flyweight titles in 2009.
Andrew Selby is a Welsh professional boxer who held the British flyweight title from 2016 to 2019. As an amateur, he won a silver medal at the 2011 World Championships, Bronze at the 2013 World Championships, and gold at the 2011 and 2013 European Championships, all in the flyweight division. He is the younger brother of former featherweight world champion Lee Selby.
Mikhail Surenovich Aloyan is a Russian professional boxer of Kurdish origin, who challenged for the WBO bantamweight title in 2018. As an amateur flyweight, Aloyan won gold medals at the 2010 European Championships, the 2011 and 2013 World Championships, and bronze at the 2009 World Championships and the 2012 Olympics.
Liborio Solís is a Venezuelan professional boxer who held WBA super flyweight title in 2013. He also challenged once for the WBC bantamweight title in 2016 and three times for the WBA bantamweight title in 2016, 2017, and 2023.
Paul Butler is an English professional boxer and two-time bantamweight world champion, having held the International Boxing Federation (IBF) title in 2014 and the World Boxing Organisation (WBO) title in 2022. He also held multiple regional titles, including the British and Commonwealth super-flyweight titles in 2012 and 2013, respectively.
Kelvin Smart is a Welsh former professional boxer who competed from 1979 to 1987. He held the British flyweight title from 1982 to 1984.
Andrew Moloney is an Australian professional boxer who held the WBA (Regular) super-flyweight title in 2020, having previously held the interim title since 2019. At regional level he held the WBA Oceania bantamweight title from 2016 to 2017 and the Commonwealth super-flyweight title in 2017. As an amateur, he won a gold medal at the 2014 Commonwealth Games in the flyweight division. As of June 2020, he is ranked as the world’s seventh best active super-flyweight by The Ring magazine, eighth by the Transnational Boxing Rankings Board and ninth by BoxRec.
Josh Wale is a British professional boxer. He held the British bantamweight title from 2017 to 2018. He challenged for the Commonwealth bantamweight title in 2012; the Commonwealth super bantamweight title in 2016; the European bantamweight title in 2018; and the British super bantamweight title three times between 2014 and 2019.
Brad Foster is a British professional boxer who held the British and Commonwealth super-bantamweight titles between 2019 and 2021.
Lee McGregor is a Scottish professional boxer. He has challenged once for the IBO super-bantamweight title in 2023. At regional level, he held the European, British, and Commonwealth bantamweight titles between 2018 and 2023.
Jay Harris is a Welsh professional boxer. He has held the European and Commonwealth flyweight titles since 2024 and the British title since 2023. He previously held the Commonwealth title between 2017 and 2020 and the European title between 2019 and 2020. He also challenged for the World Boxing Council (WBC) flyweight title in 2020.
Daniela Romina Bermúdez is an Argentine professional boxer. She is a former world champion in three weight classes, having held the WBO female bantamweight title twice between 2013 and 2020; the WBO female super flyweight title from 2014 to 2017; and the IBF female junior featherweight title twice between 2018 and 2020. She is the older sister of former light flyweight world champion of boxing, Evelyn Nazarena Bermúdez.
Shabaz Masoud
Edward Bjorklund
Thomas Essomba 
Csaba Kovacs
Patrik Bartos