AEA payment

Firstly I wanted ask if it is ok for me to sit AEA despite having written on my PS I am sitting STEP in the summer.
And secondly how do I pay for STEP/AEA, is it through my college?

I would say it's OK, provided that you didn't put it in the results pending section.

Your college will need to enter you for either, with AEA entries due next week, so go and see the college's exams officer on Monday.

STEP is less urgent, entries have to be in by 30th April.