I've been wondering about this too...
I know you can get the PGCE bursary (£5,000-£20,000 depending on subject and degree classification), tuition fee loan (£9,000) and maintenance loan (£3,575 or more), but I'm not sure about a maintenance grant from the SLC.
Maintenance grants are means tested, so I'm not sure what happens if you're getting a PGCE bursary as well. If you get the maximum bursary of £20,000, does that mean you're no longer entitled to the maintenance grant? (Not that you'd need it, but it'd still be nice! :P )
The bursary is paid in installments, so you can't use it to pay tuition fees off in one go. Better to get a student loan for the fees - you can always pay it off if you have money left from your bursary/maintenance grant at the end of the year, right?