General ACCAJob Titles

This is what I am after. I quite clearly hold full responsibility for my area as I am the only one doing all of the duties. My employer is not concerned about my job title it is for my benefit. I would like my internal colleagues i.e. from other teams and external contacts to know that I have authority/some kind of importance. It would also give me a sense of achievement. My question is what job title 'suggests greater responsibility' as you have put?

In our Finance Department it is myself and the Financial Controller/Manager above me. I do all of the day-to-day duties and reconciliations. There is a parent company with subsidiary/sister companies and there are the equivalent of our company in two other countries so I am involved in a lot of intercompany work as well. I am literally one step away from the end to end process and I have asked to get involved in this. I want to do Management Accounts. My job role is under review and I will be receiving a new job spec. This is partly due to the extra duties that I have already taken on since April.