Replying in Parliament, Health Secretary Matt Hancock also appeared to advocate the OpenSafely/TRE model, but with one crucial difference. NHS Digital, effectively a branch of the government, would extract GP patient data into a central data store, and then apply the TRE model, rather than applying it to data where it already resides in GP systems.
If your in A&E unconscious then you probably want enough records available to the A&E staff (ie, blood type, allergies to painkillers) to be available to those staff, rather than to your doctor who's off for the evening/weekend.