Twas a long time ago (biggin) but when I sat mine, they pulled out the fail letter for a long list of departments I hadn't even applied for!
I passed my pilot aptitude tests, but because I failed the Nav ones, that was it as far as flying in the RAF went.
The Navy, however, were happy with those scores for flying training. Why I didn't end up going there is a different story. It appears that even this has changed thoughfrom what was said earlier.
Basically, if you do well at everything, then you broaden your opportunities, even to the extent of a branch change to ATC or similar if you are chopped during flying training.
Best of luck