Research the company and prepare for any questions that you think will come up.
Why do you want this job?
Why do you want to work for us?
How would you deal with a disagreement between yourself and a member of staff/customer?
How would you prioritise your workload?
What can you offer us that other people cannot?
When have you worked as part of a team?
Maybe google some finance related interview questions as its not my field.
Enthusiasm and a willingness to be part of the team goes a long way I have found in getting a job.
"Sometimes I wish I wasn't as conscious as I am. It would be so much easier."