I think I've stumbled across the answer about the "3-month registration period" requirement for intervention-based MURs:
Welcome to PSNC- Speaking for Community Pharmacy, see the last FAQ:
"Can you perform a prescription intervention type MUR for a patient who has not received their prescribed medication from your pharmacy for the last three months?
Yes you can, as the three month rule does not apply to prescription interventions.
N.B. this is not currently the case in Wales."
!$*@!!! Darn!@*$!!!
