List of British heavyweight boxing champions is a table showing the boxers who have won the British heavyweight title, which has been sanctioned by the National Sporting Club since 1891, and the British Boxing Board of Control (BBBoC) since 1929. A champion will often voluntarily relinquish the title in order to fight for a higher-ranked championship, such as the world or European. Where the date on which a champion relinquished the title is unclear, the date of the last BBBoC sanctioned fight is shown. r – Champion relinquished title.s – Champion stripped of title.