2015-10-04 Rider Down junction Old St / Central St (North)

@user58281 You are speculating a lot here and this is inappropriate for this part of the forum. Speculation can and has in the had an impact on the progress of road traffic investigations and the subsequent progress of cases through courts. You may think your speculation is fair and reasonable but that doesn't mean it can't have an impact and it would be very wrong for something said in haste here to have an affect on what happens to the victim in the future.

With regards to no arrests being made, I don't know what happened in this instance but I have posted about this in the past. Whether or not an arrest is made at the scene of a collision has absolutely no bearing on the investigation of the collision or any subsequent police, legal or civil action. The decision on whether to arrest is down to officers on the scene or by the direct order of their superior. The act of arrest is not usually performed unless there is either a very clear indication of criminality (the simple existence of a collision, no matter how severe, does not automatically constitute this) or there is fair reason to suspect that the driver is an immediate or imminent flight risk. Making an arrest as a matter of course can and has led to cases being dismissed in court due to allegations of procedural failings. Police officers are placed under a burden to contribute to the legal and judicial process to help prevent this from happening so descisions on whether or not to arrest on the scene are well considered by the officers on the scene. Not making an arrest there doesn't preclude an arrest being made at a later time. If you demand that every driver involved in a collision is arrested at the scene then you are contributing to the erosion of the quality of the legal process which is already failing vulnerable road users.