The document “MSF-586.27-Services-British-Standards-and-NSI-Code-of-Practice-Jul-2022” outlines the requirements for NSI approval audits against recognized British Standards and NSI Codes of Practice for security services. It details specific standards relevant to various security services, including guarding, cash handling, and CCTV management, and emphasizes the necessity for companies to comply with these standards prior to undergoing audits. Additionally, it provides information on accessing British Standards and NSI Codes of Practice for approved companies.