The CMA uses warning and advisory letters to follow up businesses if we have concerns about possible law breaking and promote compliance with competition law.
This register gives details about warning and advisory letters that the CMA has sent to businesses.
Information for businesses about when the CMA may decide to send a warning or advisory letter and what to do if you receive one.
Published 14 January 2016 Last updated 7 March 2023 +show all updates
Updates to warning and advisory letters published.
Details for 2021 added to the warning letters and advisory letters registers.
2020 figures published.
Updates to the competition law warning and advisory letters register published.