The original issue is being clouded here.
The scenario of the stolen car painted by katangel is not analogous to that of being detected by a safety camera. The occupants of the stolen car are NOT obliged to provide evidence as to who was driving (although their �silence� can be used by the prosecution in court to suggest to the magistrates or a jury that they knew but would not tell). This silence, alone, however, will not support a conviction. In these cases unless there is other supporting evidence, the CPS (not the police) will not authorise a prosecution to proceed.
The registered owner of a vehicle IS obliged to provide details of the driver at the time of an alleged offence. If he does not, and cannot provide a satisfactory explanation as to why he has failed to do so, then he will be convicted. In these circumstances the CPS almost always authorise the prosecution to proceed because it is normally for a court to decide whether the Keeper�s defence is sufficient.
Safety cameras may well be used as supporting evidence to prove who was driving a stolen car. They will not normally be used to identify speeding drivers because, in the vast majority of cases, there is no need.