Involved in a hit and run accident and police won't do anything!

Hi I was today involved in a hit and run. I was bumped in the back of my car by a fellow driver who then fled the scene when I asked for his details. I wasn't able to catch his number plate but there were a lot of witnesses however no one stopped to give me their details to hand to the police. This happened in a very busy part of central London just before a no right turn road so surely there would be CCTV. However the police have stated they won't try and obtain the CCTV as it is a minor offence! I can't believe this, how is this fair? I now have damage to my vehicle and don't feel I should have to claim on my insurance. I think the laws around hit and runs are absolutely ludicrous because my bet is the man who crashed into me had NO insurance and probably no licence which is why he ran. The government says it wants to be tough on criminals but the impression I get every time I go to the police is that they just don't care. I feel absolutely violated and upset at the whole ordeal. I was just an innocent person going about my business and had someone crash into me because they weren't being careful. It just seems completely unfair and makes me wonder why people haven't taken the law into their own hands, the police are useless!