Non-ministerial government department
Non-ministerial government departments (NMGDs) are a type of department of the Government of the United Kingdom that deal with matters for which direct political oversight has been judged unnecessary or inappropriate. They are headed by senior civil servants. Some fulfil a regulatory or inspection function, and their status is therefore intended to protect them from political interference. Some are headed by a permanent office holder, such as a Permanent Secretary or Second Permanent Secretary.