Extended Research

I then done some research into film titles but with the same genre as "Loan Shark", an action/thriller to see if the chosen title was appropriate and wether it was going to be kept.
I discovered that action films are titled consisting of two things:

1. Giving away a brief and simple description of the plot, for example: Taken, Abduction, Man on a Ledge and Safe House. This is because it is aimed at a certain audience. People who enjoy an action.thiller are into the special effects and action, rather than the story therefore a simple title works just fine. 
2. The other type is how an action/thriller title simply gives away the main character of the film, for example: Headhunters, The expendables, Batman, Spiderman etc.
   

In conclusion we decided to keep our name "Loan Shark" as it fits in with the genre of action/thillers, giving away a brief description of the storyline and main characters.