You will find it very difficult to find a school willing to support you for assessment-only route for QTS, given the general employment situation in primary. You'll be in a similar position to overseas qualified teachers, and they find it very difficult to get on their programme for QTS by assessment and portfolio called OTTP because of the paucity of willing schools. Why bother taking on an unqualified where there is a glut of qualified staff looking for work? Pace Kritur, you can get on GTP as you haven't completed your PGCE and don't have QTS. But there is a fierce competition for GTP places - worse than for PGCE.