This guidance from the Pan UK Pharmacy Working Group for ATMPs has been written in collaboration with the HTA and MHRA. It clarifies the regulatory requirements for healthcare organisations who are procuring (harvesting) patient’s own cells or tissues to be used as starting materials in the manufacture of an ATMP where the subsequent ATMP manufacture occurs outside of the EU. In the event of a no deal EU exit, it will also be relevant for ATMPs manufactured in the EU