Hold that beer.
I'm sorry to say that there is already concern about opioid addiction relating to prescription opioids in the UK, whether prescribed or sourced elsewhere.
Prescribing guidelines have changed since 2016, with effects being monitored.
The vast majority (over 75%) of people abusing opioid painkillers in the US received their drugs from friends or relatives for free, stole from friends or relatives, bought them on the street, or received from more than one medical prescriber. A tick over one-fifth was from a single HCP (doctor or PA).
www.samhsa.gov/data/sites/default/files/report_2686/ShortReport-2686.html
A DC of mine is a doctor working in an area of the US that is medically underserved, and it is common knowledge among doctors there that the vast majority of opioid addiction cases from thensurrounding counties that are seen in the local hospital system are the result of PAs having prescription privileges.
With the spread of PAs in the NHS, it will be very important to keep prescription pads away from them and to ensure that they do not as a body fall under the umbrella of any powerful lobby within the medical profession that will hamper strict supervision.