The World Health Organisation Surgical Safety Checklist (WHO SSC) is a validated tool for reducing in-patient surgical morbidity and mortality. It is not performed universally with full compliance. Two audit cycles were completed at two different trauma and orthopaedic units and compliance was measured. Site 1 was found to have a significantly lower compliance with the team-brief (p<0.001). Following a change in practice the compliance significantly increased (p>0.00001) at Site 1. The team de-brief was found to be consistently poorly complied with. We recommend regular audit of compliance and change in practice for all surgical units, and suggest national monitoring to ensure the benefits of the WHO checklist are applied to all in-patient surgery.