I am with Tony Stark on this one.
While papers are great, it does not make sense to prioritise them especially now that you have 8 years under the belt.
So if I were you, how would I do it?
1. Identify 5 employers that I would like to work for and that would employ me for my IT skills and experience.
2. Move heaven and earth to get in to one of them. Once in, stealthily crawl in to the department I want to work in.
Fact is that talent stands out and if as you claim you are passionate and I assume talented in the investment field, every one would notice and you would find sponsors willing to take a risk on you.
If you are already in a bank, you can start by moving to treasury department.
@Mawinder, the ACCA salary survey alarmed me on account of the low salaries for managers and senior managers. And ACCA would not help this guy much in achieving his goal.