The Ground Examiner is an exclusively UK thing and never existed under either JAR or EASA. With the move to centralised exams, the concept of the GR is no longer relevant, as they will no longer hold or administer examinations. The process of conducting CAA exams will now be an administrative process for the ATO/DTO. Any FI could debrief the candidate based upon the exam report and ideally the FI who gave the training or signed off the candidate. With no GRs thats one less fee to pay.