Have you ever seen Clerks 2?
They get arrested for animal cruelty or something like that and they mention how they did a criminology course, and one of them says 'what were we planning to be, Batman?'
Find it rather funny
Good luck with getting into the police, it's quite competitive I hear. In the meantime you could join an agency and do some tempwork, the workpoint in blackburn has always got me jobs quite quickly.