I have googled Competition & Markets Authority. Thanks to treepie for mentioning the CMA.
I found the following : -
Get into CMA website, click on Departments, click on Dept. of Health, then it says .. quote “The Department of Health (DH) helps people to live better for longer. We lead, shape and fund health and care in England, making sure people have the support, care and treatment they need, with the compassion, respect and dignity they deserve. (me - ha ha )
DH (Dept. of Health) is a ministerial department, supported by 27 agencies and public bodies.”
Another section says :
"The CMA is (currently) investigating suspected unfair pricing in the supply of certain pharmaceutical products under Chapter II CA98/Article 102 TFEU."
"Case information ...
On 25 October 2016, the Competition and Markets Authority (CMA) launched an investigation into suspected breaches of competition law in the pharmaceutical sector. The investigation is under Chapter II of the Competition Act 1998 (CA98) and Article 102 of the Treaty on the Functioning of the European Union (TFEU). The investigation relates to suspected unfair pricing by way of charging excessive prices in the supply of certain pharmaceutical products, including to the National Health Service.
The CMA has not reached a view as to whether there is sufficient evidence of an infringement of competition law for it to issue a statement of objections to any of the parties under investigation. Not all cases result in the CMA issuing a statement of objections.."
I also found their form - Notify the CMA of anti-competitive or market issues at -