They must get the scores at roughly the same time as the students, probably before the students.
DD's UKCAT was above her year's average so I don't know how it played out in the darkened rooms of admissions tutors but the BMAT and UKCAT tests are so different that I assume they know that a student could do well on one and not the other.
It depends on how they use their own particular formula for picking, I suppose. If they don't require UKCAT they might ignore it altogether, or they might look at it as part of the general overview of the student. Maybe gut instinct comes into it somewhere!
I'm pretty sure that a BMAT med school will value a good BMAT score over a weak UKCAT score any day of the week.
In noddy's DD's case, I think her best chance this year is to try the BMAT exam. The best outcome is that she ends up at a BMAT uni but merely taking it might get her application that second glance at a non-BMAT med school that perhaps would get her foot in the door. So, if she gets a good BMAT result and has not been eliminated before early December when the result is out then she is still in with a chance.
What she has going for her is determination and, if she can get as far as an interview, she should be able to show that she's got what it takes.
She has a weak but not disastrous UKCAT score.
She has a full set of A's at GCSE, but not enough *s for B'ham, Bristol, L'pool.
She is taking the right A levels.
She's got a good work experience record.
She will write a good PS
She will have a good school reference
Her predicted grades will likely show that she is capable of offer grades.
She REALLY wants it.
A good BMAT score would put her in the running, I feel.
(She's on a par with my DD at this stage in the game. DD had a better UKCAT score but less work experience - and we were dead scared she was going to be predicted a B in the non-science A-level.)
I remember talking with you about interviews last year and agree that appearing pre-rehearsed is a bad idea. A subscription to New Scientist is a good investment!