A PCO (Public Carriage Office) licence is a document issued by Transport for London (TfL) that allows individuals to work as a taxi driver, minicab driver, or chauffeur under a licensed private hire operator in the United Kingdom. It is a legal requirement for anyone who wishes to work as a private hire driver in London to hold a valid PCO licence. The PCO licence is issued by the PCO, which is a department of TfL. To be eligible for a PCO licence, applicants must meet certain criteria, including being at least 21 years old, having held a full UK driving licence for at least three years, and having the legal right to live and work in the UK. Applicants must also pass mandatory assessments, including a topographical assessment, English language requirement, and a Safety, Equality and Regulatory Awareness assessment. The PCO licence is valid for three years, after which it must be renewed. The renewal process involves updating personal and vehicle information, taking a new medical examination, and potentially retaking any relevant tests.