Hi there. I work as a bookings coordinator for an interpreting and translation agency. Your qualifications sound ideal. Usually translators have a dpsi or degree in a language which has a translation module as you say in your post.
Do you have experience in translating at all?
I'm not trying to recruit you, honest.
We don't have a lot of use for police work in the languages you provide but we certainly have more health work like medical reports and private work like marriage certificates. Hth