Ah, that's it. Was rather off beam! I recall saying "chimpspg", sniggering, getting shouted at by the trainer....
I don't know what A and S are set up, but Justice Departments are administrative. Decisions to prosecute rests with the police for summary and admitted either way offences, or the CPS for indictable or non admitted either way offences (with a few exceptions to that rule, such as where racially aggravated, etc). The civilians in between prepare files for court and push paper, they play no part in the decision making process.
All motoring offences up to careless and dangerous (in the case of dangerous, where admitted, but at the lower end of the scale) are solely the decision of the police to charge or summons, so don't let the superninetendo's give you any guff - the investigating officers supervisor makes the decision on prosecution, and no one else. No one then has the authority to countermand that decision, although the CPS has several mechanisms by which they can then halt the process wt the first hearing. If Avon and Somerset aren't charging, it's because a police officer somewhere is making the decision not to - that decision could likely be a policy one made by the scrambled egg ranks, but it is nevertheless a decision that only the police can make.