Welcome Mark.
Believe me I know exactly how you feel - I've been where you are now.
It's all about ticking boxes these days.
Three bits of advice from me:
1. Relax - ride as if you are out on your own / with your instructor.
2. Lifesavers where appropriate.
3. Ensure you keep to speed limits (but don't ride too slowly - the examiner expects you to ride at 60 / 70 and look confident at that speed)
Good Luck for the next one. Just remember the following phrase
Illigitimi non caribundum (it's always served me well).
