List of public inquiries in the United Kingdom
In the United Kingdom, the term public inquiry, also known as a tribunal of inquiry, refers to either statutory or non-statutory inquiries that have been established either previously by the monarch or by government ministers of the United Kingdom, Scottish, Northern Irish and Welsh governments to investigate either specific, controversial events or policy proposals. Non-statutory public inquiries are often used in order to investigate controversial events of national concern, the advantage being that they are more flexible than the statutory inquiry as they do not need to follow the requirements of the Inquiries Act 2005, The Inquiry Rules 2006 (UK, excluding Scotland) and The Inquiries (Scotland) Rules 2007.
Source: Wikipedia — List of public inquiries in the United Kingdom (CC BY-SA 4.0)