Neil and Tony try to pinpoint the exact location of the Battle of Barnet which took place in 1471 between the armies of Edward IV, the Yorkists, and the Lancastrians. Along with a team of archaeologists, they head to suburban London to investigate the medieval battle. Today the battlefield has disappeared beneath centuries of urban development, but just over 500 years ago, 25,000 soldiers fought one of the crucial battles of the Wars of the Roses. The location is currently a golf course and a car park, but the team manages to find spots that could be excavated for evidence of the battle.