Luckily there's only one main location that needs to be found, and that's a police officer's office.

I've sent off an email to the Victorian Police, inquiring into how their office's look and possible location suggestions. This will be the first of many emails to the police, as I'll later need them to clear the script (the police can't be portrayed in a negative light) as well as hire uniforms.

So because I can, here's the email: