This document provides guidance for assessors evaluating learners on their competencies for conducting NHS Health Checks. It describes the role of the assessor and outlines 11 units of competence that assessors will evaluate learners on. These include competencies in areas like the NHS Health Check program, obtaining consent, performing clinical measurements, and communicating with patients. The document provides assessment principles, defines the types of evidence assessors can consider, and describes how assessors should document competency sign-off. Its purpose is to promote consistent competency assessment across learners and settings.