The CMA acquired its powers on 1 April 2014 when it took over many of the functions of the Competition Commission (CC) and the Office of Fair Trading (OFT).
The UK Competition Appeal Tribunal (CAT) "is a specialist judicial body with cross-disciplinary expertise in law, economics, business and accountancy whose function is to hear and decide cases involving competition or economic regulatory issues." (Description from CAT's homepage.)
Neutral citation is [yyyy] CAT #
In September 2010, the LawBod became the new home of the Bodleian's Official Papers Collection.(It was formerly in the Radcliffe Camera.) Useful if you need to find out government policy statements - but they also collect publications of the OFT.
The holdings are searchable via SOLO. There are specialist librarians for this collection: please email queries to official.papers@bodleian.ox.ac.uk