Your GP practice holds copies of your patient health record electronically and in paper format. Both contain the healthcare information about you that your GP needs including your medical history, medications, allergies, immunisations and vaccinations.
If you have previously registered with a different GP in England, upon registering at this practice your electronic health record will, where possible, be transferred automatically from your previous practice through the use of an NHS system called GP2GP.
Transferring Your Electronic Health Record Information Leaflet.