How to move from corporate finance to audit

Hi everyone.
I am currently going through ACA training in the UK with a corporate finance company. I am not involved in corporate finance though, just in the finance department, which is kind of like management accounting only with a bit of taxation :P

Anyway, I was wondering if anybody had any idea how I can get involved in Audit after getting my qualification (I can't move to an audit firm because most of them don't pay enough to sponsor a Visa- 20,300 at least required). I really want to become an auditor in the future.

Also, if anybody knows a firm that employs a candidate with a 2:2 and still pays the minimum for Visa sponsorship, please let me know. It does not have to be the audit department, as long as I can get involved and gain 'audit experience'.

Thanks a lot. Peace