That's where answers are subjective, what means one thing to you, means another to someone else and I didn't see any lectures, sorry
The answer is 'no one can answer it 100%' - you'll just have to accept that as the answer I'm afraid
Out of interest, what course are you doing at Uni? If it's in childcare or somewhere where you will be placed with vulnerbale people you will have a CRB very son and better to have one before you qualify than after IMO
anyway GL again