The Baseline Personnel Security Standard (BPSS) clearance is a fundamental requirement for UK civil servants, armed forces members, and government contractors. This article explores the comprehensive process involved in obtaining BPSS clearance. We delve into the four key components?Right to Work, Identity verification, Criminal Records check, and Employment History verification. Each section provides detailed guidance on what candidates and employers need to prepare, including necessary documentation and common pitfalls to avoid. By understanding each step, organizations can streamline the hiring process, ensure compliance with legal obligations, and protect national security. Additionally, we discuss how Checkback's proprietary system accelerates the BPSS checking process, reducing the typical turnaround time and enhancing accuracy.