I work in the nhs and frequently deal with subject access requests. The problem is no one ever remembers what's in someone's full notes
I agree that 85% of people could have their notes straight up without an issue
Theres a percentage that could have all of their notes but would need it explained eg.cofusing terminology, or rationale behind the recording
Theres a percentage that need these redacting eg. Conversations about safe guarding, third party info or harmful info
Now I work in mental health the percentage of people who would find it incredibly difficult is higher so people should be sat with them
The problem is no one has any idea where you fall on this spectrum until we have actually spent time reading what's in your notes!
In this case for example, it's possible that a surgeon has documented concerns about domestic violence or your gp summary of you has an alert about possible your mums drinking in pregnancy that's sent through on their previous diagnosis sheet that is included in referral. It's unlikely but until I read them I won't know.
The subject access request allows services time to review what they send, and time to weigh up the possible harm. It can take hours or even days with patients who have extensive notes to go through notes ive written, colleges have written, that we've been sent from other services, that we've been sent from family's etc.
The idea is to have time to look at it and weigh it up, rather than give you something on the presumption it's fine without knowing what's in it
I know what I write, and in our service 99% of letters to gp, discharge summaries etc are written with the patient cc'd in and designed to be read by the patient