It is now over ten years since the issues with "old formula" Teva levothyroxine which saw the publication of the MHRA/Committee on Human Medicines report which expressly advise avoiding 28-day prescribing.
Yet we still see all too many members forced into getting repeats every 28 days with all that entails.
helvella - 28-day Prescribing
For many years now, there has in the UK been a near-universal imposition of 28-day prescribing.
There is, quite simply, no rational basis for this policy in relation to long term medicines on repeat.