NHS England's 2026/27 GP Contract introduced a formal requirement for all clinically urgent patients to be offered a same-day appointment, with performance calculated monthly through General Practice Appointments Data and monitored by ICBs. This presentation is designed for practice managers and PCN leads. It explains how the performance formula works, why slot mapping drift is undermining reported compliance across England, and what steps teams need to take — including a five-week implementation roadmap, reception language guidance, and a real practice data example.