Reporting adverse events and lessons learned can help improve patient safety beyond the original impacted facility, but low-quality reports can hinder learning. This study describes the quality of reports submitted during the first three years of England’s mandatory Learning from Deaths (LfD) program. While up to half of National Health Service (NHS) hospital trusts submitted data for all six regulatory statutes, a small minority did not submit any data. Three years in, the identification, reporting, and investigation of deaths has improved, but evidence of improved patient safety is still lacking.