Just for everyone to be fully aware, data for NHS research and planning is a separate opt out, called a “National Data Opt-out”. This is something you can make a choice on within the NHS app. Personally, I’ve opted out as I don’t trust them to anonymise my data properly before using it. I found it irritating that the NHS app didn’t simply present a toggle, but tried to “explain” what the data was used for in an attempt to persuade you to keep opted-in.
The opt-out for this new activity is called a “Type 1 Data opt-out”.
For clarity, there is also a third type of opt-out: the Summary Care Record. This is a slightly pared-down version of your medical record for use in emergencies. The idea is that you could attend A&E at the other end of the country, if needed, and they would still be aware of your allergies, etc. You can choose to have just basic information (like medications and allergies), additional information (like details of recent GP appointments) or no information (and not have a SCR) shared.