DS is thinking of applying to Cambridge, and would apply again if he didn't get in first time round.
A friend's son applied to Oxford, & didn't get in, and she told me he couldn't apply again, as he'd already applied to his preferred non-Oxbridge courses, and you can't apply twice for the same course at the same university. However, she said each Oxforsd or Cambridge college is seen as a different institution for this test, so you can apply twice but to different colleges.
She told me the knowledgeable people at her DS's (very well-known, highly academic) school applied to any-old non-Oxbridge university first time round, plus Oxbridge, then if they don't get in, apply again after A levels to Oxbridge, plus their preferred non-Oxbridge courses.
DS tells me this is rubbish - that you can apply twice to anywhere - what does the MN panel say?