As per crouchy’s reply, the police won’t do anything about it. Police don’t get involved in minor RTCs unless there is some truly outrageous driving. Yes, failing to stop is an offence, but it’s very rarely enforced for this kind of thing. It’s left to insurance companies to sort out. At least as it’s all covered on video you can get your car sorted and your insurance company will recoup the costs from the other party.
Your right, The police try not to get involved in anything to do with crime and are very selective in what they do react to, I believe "low hanging fruit" is the phrase I'm looking for - which is normally having a good car chase of a scrote in a nicked car or a kid on an e-scooter.
The damage in a car park was an accident - and not anything the police would get involved in, but, driving off after causing damage to a third party property is an offence and its not the job of the police to decide which offences they want to deal with and what offences are below them - they took an oath to uphold the law and protect the public - however somehow they have confused the word "protect" with persecute"
People driving off after a minor collision if they think they can get away with it simply reflects the degree of dishonesty within people - and the majority of people would do it, but its in line with societies values because kids are brought up in an era whereby whatever happens its someone else's fault - we live in times whereby there is always an "expert" or "professional" that will defend or mitigate actions to minimise the responsibility of the individual.
However, the police shouldn't be able to simply "bosh it off" as a minor road accident after a hit and run - the resulting value of the damage should not be the deciding factor.
If there are laws that are graded as "not for enforcement" then they should be removed from statute so its clear to everyone, however, the reason they still exist is so when the police actually catch a perpetrator for something quite tasty, something they want to get involved in, they can also include a list of other offences to prosecute - and make their "books" look good - or as i say - low hanging fruit.
The law is there to persuade people to behave in accordance with societies values, fail to comply and there is a consequence, just where is the consequence when the people employed to uphold and enforce the law choose which bits to enforce or get involved in and don't take any action to deter those that hit and run.
In this case the Merc driver damaged another's property, drove off, and only because of video evidence will the drivers insurance be required to cover the costs, what action has been taken against the driver as a punishment for the offence of driving away? - absolutely nothing - so where is the deterrent? - and if there is no deterrent then the driver will not address that inherent dishonesty in the future, it also encourages others that to drive off is OK - which leads to proliferation of that offence because no one takes it seriously. Perhaps if there were a £1000 fine plus 20% of the value of the damage caused for driving off after causing an accident - as an absolute offence, it would address those behaviours.