It is recorded in newspapers in the 1840s that cockfights were held at the Union Bridge. The latest I can find was in the Berwick Advertiser of 1849 (despite being made illegal 2 years prior), when a "considerable concourse" assembled at the bridge for this purpose. It was reported as a "semi-barbarous amusement which is now happily but seldom witnessed". The parties concerned in the match were from Berwick and Norham, with the spectators chiefly being navvies. "No breach of the piece occurred"...

Given this was the last, it's very likely this was a regular place for fighting long before, especially thanks to the cross-border jurisdiction if they got chased by the coppers. Berwick was also a long time meeting place for international cockfighting, so any dodgy fights probably occurred out here!

The exact location of the cockpit is not known.