The Gotcha lies here:
Set and cross check altimeters to QNH, Regional Pressure setting RPS, Standard pressure setting, or QFE as specified in checklist, Ops Manual or as appropriate
This unfortunately is a recurring statement for each phase of the test.
You should also bear in mind that the CAA is not a 'static' body from the view of manpower. Their management regularly gets head-hunted into the airlines (particularly at present when their salaries are dropping rapidly behind those of airlines) so it is entirely feasible that your may cross paths with one of those involved in your case - not quite where you want to be at an early stage fo your career.
Talkpedlar speaks wise words; in your shoes I would listen.
HWB