The recent murder of Sarah Everard was solved largely because of CCTV images taken by, if I remember rightly, a bus and a Ring doorbell. Police were able to retrace her movements using those images as reference points and then working backwards to her last known location and forwards to when she encountered her killer (who turned out to be an off-duty police officer). [1]
I think a lot of the time it comes down to resources. For a high profile murder they're prepared to put in the effort. For more minor offences, it's not worth it (to the police, not the same as to the victim)
I think a lot of the time it comes down to resources. For a high profile murder they're prepared to put in the effort. For more minor offences, it's not worth it (to the police, not the same as to the victim)
[1] https://www.theguardian.com/uk-news/2021/jul/09/sarah-everar...