NHS Digital national data opt out Link https://digital.nhs.uk/services/national-data-opt-out

The NHS Digital national data opt out is a service that allows patients to opt out of their confidential patient information being used for research and planning.

Follow the easy instructions online. If you don’t know your NHS number, just add your post code. You’ll get a confirmation code and viola, off the controlling system, unless you want to allow the NHS to use your data for research and planning.

Considering COVID-19, I wish I had known about this NHS digital national data opt out earlier considering all the junk letters I’ve received asking me to take part in this trial and that trial.