Two exceptional metalwork deposits, discovered at Melsonby, North Yorkshire, together constitute one of the largest Iron Age hoards recovered in Britain. Dominated by ornate horse harness and vehicle parts, these first-century AD assemblages provide possibly the first evidence for four-wheeled wagons from Iron Age Britain. Associated geographically and temporally with another hoard found in 1843 and with the Late Iron Age ‘royal site’ at Stanwick, these deposits have the potential to broaden our understanding not only of the varied forms of wheeled transport but also of expressions of wealth, status and elite mortuary practices in Iron Age Britain.