NHS records are centralised to a large degree. I can walk into any of several local GP offices and the doc pulls up my details on the screen.
I opted out of that when this central dB was created...Mainly due to the fact that at the time so many incompetent fcukwit civil servants had been leaving dB data laying around on trains. I also don't want people accessing my medical records without my knowledge, or worse, accidentally entering incorrect data into them.
Can you imagine if a Dr somewhere messed up and got a digit wrong and you ended up having a history of drug abuse in Glasgow? And then the CAA AME accessed this......!!!