Jay, which bit of your eyes is broken?
There's a consistent sliding scale of charges for attempted assault, actual assault, attempted murder and actual murder (and a higher set of each, when the victim is a cop). Murder will get you jail (not a fine - I keep needing to explain this to the cops - fining you basically wipes away your 'crime' and you only go to jail for 10mins if they do that, with a bail payable after 5 mins at a ridiculously low £1500, I think - if they simply just bung you in jail, in murder cases, you'll go to prison for 15 minutes, and the bounty payable after 5 mins will be half the bounty-price - which is about £50,000 for cops... so that's a £25,000 bail!).
Of course, the cops are at liberty to use discretion - hence sometimes, you'll get off with a £1 fine for an unavoidable manslaughter charge (where some twat ran out in front of your car, for example). Sometimes though, manslaughter caused by negligent driving on your part, will still be fined at top rate, and the officer will look for other things to add to your charge-sheet.
Some officers though, will just try and push the fines up, and see how much of a bitch you are, and whether you'll pay it, abuse him further and give him more rope to fine you with some more, or start refusing and get some jailtime as a result. Cops are allowed to RP- that is part of the game, and they are most definitely not all angels. Obviously, if they get caught, they'll get a rollicking from their superiors, and maybe even busted out of the cops entirely, but those that do engage in that kind of dodgy-ness, generally hide it well. It's part of the game. Play back. Take one of the fuckers hostage and make his mum cry. Lead him down a side-street while another of you blows his car up. Just make sure you do it with some RP, and don't 'power-play' him, and you'll be fine. Anything that isn't just 'fuckdapolicehandsupbangbang' is fine by me...