Sickness certification system in the United Kingdom: qualitative study of views of general practitioners in Scotland

I am interested in the doctor who leaves the diagnosis box blank.
Having landed the role of Caldicott gaurdian to various bodies I could
argue a good case for doing this all the time. Anyone else in agreement?
If the GP is held to be gate - keeper, and has signed for legal
responsibility, why should he share sensitive diagnostic information with
a group of junior civil servants and line managers?

Competing interests:
None declared