In 2020, UK shooting and rural organisations pledged to achieve a voluntary transition from the use of lead shot ammunition to non-lead alternatives for hunting by 2025. The SHOT-SWITCH research project was set up in 2020 to monitor progress towards this aim by examining the proportions of wild-shot common pheasants Phasianus colchicus available to consumers in Great Britain that were killed using lead and non-lead shot. In the study’s third season, 2022/2023, 94% of pheasants sampled had been killed using lead ammunition. Statistically, this is a significantly smaller proportion than in the preceding two seasons (both > 99% lead), but it remains large. We found no direct evidence of any effect of recent voluntary initiatives to promote the replacement of lead with non-lead ammunition by suppliers and retailers of wild-shot game.The Royal Society for the Protection of Birds and Waitrose & Partners contributed to the costs of materials and reagents for the study