New member here, I have read all of the posts across the threads and the rules, so hopefully this doesn't break any!
All just my own opinion, and with the caveat that he is accused and not convicted etc.
Although there seems to be confusion around his work pattern, thankfully due to where he works they will know the exact time he started and finished. There are also exemptions to the working time directive for emergency services and armed forces, but only in certain situations- so it's impossible to really know, but again, they will have the info they need re: when he was at work which is the important thing. I don't think he would have much insight into investigations and procedures through his job though, JMO but the areas of the police he has allegedly worked in would not give him insight beyond what anyone else could research and find out. Although in hindsight it's terrible that the alleged IE wasn't acted upon, and highlights a bigger issue overall in how they are dealt with; afaik there's no proof or statement that details they knew it was him and hadn't acted. I wouldn't be surprised if it hadn't even properly crossed anyone's desk yet, or it was waiting to be reviewed. If it turns out they did know it was him and did nothing, that's a different matter, time will tell. Of course with hindsight it's tragic as there are so many what ifs (although also speculative of course, as it's assumed if he was suspended from work he wouldn't have done it, but who knows).
The additional info of the Astra along with the charge of kidnap and the short time frame between the police cam and the bus cam imo suggests heartbreakingly wrong place wrong time rather than anything else, but that's JMO. As the phone was off so quickly and it seems none of the residents etc were disturbed (as far as we know anyway, it's possible more has been recorded than released to the public), and the fact that another bus didn't catch anything further when they are timetabled to be every few mins, it seems likely that it was quick and quiet. Just my thoughts, but if he asked to borrow her phone for whatever reason (perhaps it was still visible following the phone call), he could have switched it off straight away and then perhaps took it back to the car where she asked for it back? Given the area and that it can be busy, my opinion is that it's likely most of the restraining happened inside the car.
Beyond that no idea, the extent of the searches and locating and identifying quite quickly alludes to there being more they know than has been released, and I don't think anything I think around it will add anything to the thread. Although I do think emailing a boss when in that type of role isn't the best way to make contact as they won't be sat at computers, and it could be a while between shifts. But it does leave a trail I suppose, for what reasons I won't speculate and it's been discussed a fair bit already.
It is so heartbreaking, and thoughts with her friends and family, and everyone affected by this case.