This document provides guidance for mentors on compiling a practice portfolio to demonstrate achievement of the eight standards for mentors set by the NMC. It outlines the domains covered by the standards, including establishing relationships, facilitating learning, assessment, evaluation, environment, context, evidence-based practice, and leadership. Examples of evidence are provided for each standard, such as interviews, reflections, action plans, and testimonials. Mentors are expected to cross-reference evidence in a table and ensure confidentiality. Reflection is encouraged to help mentors provide evidence and improve their practice.