I know someone who just applied for the minimum maintenance because it wasn't worth the hassle of getting their parents to fill out their part for an additional £50 or something. So they didn't have to put any of their parents details in.
If you applied for anything that required means testing, you should have been asked to provide contact details for your parents. Your parents make their own accounts and provide their income info themselves.
Overwise, are you over 25, and independent student etc, so SFE means tests based on your income rather than your parents?