List of British Light middleweight boxing champions is a table showing the boxers who have won the British Light middleweight championship, which has been the British Boxing Board of Control since 1973.
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 his final defence is shown.
r – Champion relinquished title.
s – Champion stripped of title.