He is the current holder of the British welterweight title and the WBO Inter-continental title at the same weight, In 2009 he was voted Britain's young boxer of the year by the Boxing Writer's club.
Early professional career
Brook's first fight as a professional took place in September 2004 with a 6 round points victory over experienced journeyman Peter Buckley at the Don Valley Stadium in Sheffield. He would fight again four more times that year to end 2004 with a record of 5-0 in just four months. Brook went about learning his trade against a host of journeymen before getting the opportunity in June 2008 to fight for the British title having compiled a winning record of 16-0.
British Champion
The championship fight at London's York Hall saw Kell Brook take on Welshman Barrie Jones for the vacant crown. The fight was not without controversy however as the previous incumbent, Kevin McIntyre, had been stripped of the title after he sustained an injury and had to pull out of his scheduled defence against the Yorkshireman. Brook ended up winning the vacant belt with a 7th round stoppage of Jones who had come in at relatively short notice.
Having won the belt Brook was then ordered to face the former champion and the bout took take place in Glasgow's Kelvin Hall on 14 November 2008. Prior to the fight and referring to the bad blood that has built up between the two fighter's Brook said "Once I knock out McIntyre in style then there will be no question mark over who should be British champion."
When the fight finally did happen, Brook put McIntyre down three times in the first round to win by TKO to send the Glasgow crowd home disappointed.
He claimed the Lonsdale belt outright on the 20 July 2009 when making his third defence against Prizefighter winner Michael Lomax. The fight, at the MEN Arena in Manchester, was on the undercard to Amir Khan's world championship victory over Andreas Kotelnik and saw Brook win by stoppage in the third round. After the fight Brook said that he believed he was the best in Britain but couldn't say for sure until he's beaten Chorley's Michael Jennings who he challenged to a match-up.
Young boxer of the year
On 25 September 2009, Brook pipped fellow champion Nathan Cleverly for the prestigious title of young British boxer of the year voted for by the Boxing Writer's club. The vote was the closest in the history of the award with Brook claiming the honour by one vote over Cleverly who held both the British and Commonwealth titles at light-heavyweight. In winning the award Brook joined a list of boxers which included the likes of Ken Buchanan, John H Stracey, Barry McGuigan, Nigel Benn, Naseem Hamed, Joe Calzaghe and Amir Khan.
WBO Intercontinental champion
Brook's first fight of 2010 took place in Liverpool on 12 March 2010. The fight, for the WBO Intercontinental title, pitched Brook against Poland's Krzysztof Bienias, a man last beaten by Junior Witter in 2005 and with a run of seventeen straight wins. Brook collected his second career title when in the sixth round the fight was stopped by the referee following a dominant display by the Yorkshireman.
Brook's long awaiting fight against Michael Jennings was due to be next on 3 July 2010 until a rib injury forced the fight to be postponed for a second time. The fight, for Brook's British belt was then scheduled to take place between Jennings and former Commonwealth champion John O'Donnell, before O'Donnell pulled out and was then re-scheduled between Brook and Jennings.
Finally on the 18 September 2010 Brook boxed Michael Jennings at the LG arena in Birmingham. Kell won the fight in round 5 following a bad cut above the eye sustained by Jennings which the referee deemed bad enough to stop the fight. The win doubled as Brooks's fourth defence of the British title and his first defence of the inter-continental belt.
On 9 December 2010 Brook made his second defence of the inter-continental title beating Ghana's Phillip Kotey with the referee waving the fight off during the second round. The win ensured that Brook kept his number one ranking with the World Boxing Organisation.
On 30 January 2009 Brook returned to the York Hall to meet former marine Stuart Elwell in a voluntary second defence. The fight again ended quickly when the referee stopped the fight in the 2nd round handing victory to Brook.