Realistic Chances Of Getting On A Pgce Primary Course Through Clearing?

When I applied through official GTTR website in December 07 i had limited experience. Since January I have been working as a Teaching Assistant in various schools. For some crazy reason the GTTR won’t let you update your details. Currently retaking my GCSE Maths on Evening course (result expected June 08), Science D (current grade)
Do i have any chance of securing a place at a Uni, if so which ones?
Is my 8 years of work experience in HR/Management worth nothing to these Uni’s?