Patients and the public are increasingly found in research teams - as co-applicants, on advisory panels and on conference platforms. Some are acting as co-researchers, perhaps working alongside an academic researcher in a 2:1 interview with a respondent.

Has anyone in the forum experience of
  1. deciding the grounds on which the PPI co-researcher should or should not undertake GCP training and certification;
  2. obtaining access to GCP training for non-salaried PPI co-researchers and making reasonable adjustments as appropriate;
  3. resolving differences where HRA advice is that the Standard DBS check may be sufficient while some NHS Trusts ask for Enhanced DBS with checks of barred lists;
  4. navigating processes to obtain a research passport for such individuals?

I'd be grateful for any views, insights or pointers.