I have an interview for Greenwich next week and they have asked me to bring; my passport, proof of educational grades (GCSEs A levels etc), a letter from my educational setting (work experience or volunteering) outlining the contributions and attitudes I have shown while completing this.
They have also asked me to prepare for a maths and english test as well as finding out recent issues involving Primary Education at the moment. This may be different to Manchester but this could help. Good Luck!