Bloody beaurocrat

Someone who witnesses a crime, then calls the police before starting a confrontation to prevent anyone being harmed - After or during the conflict, the police will take the suspect into custody with injuries sustained by the one who called. The "bloody beaurocrat" will proceed to write the paperwork for the arrest and make a report.

Saw some bloke smack his bird and a couple of bloody beaurocrats hogged him onto a vehicle and busted him up. They even waited for the cops and sent him packing with rotten kidneys and filed the whole thing... Won't be seeing that guy for a while.