This isn't how the UK works. There is a vast ecosystem of pre-crime authorities and the police are able to investigate things which aren't crimes and add "non-crime" incidents to your criminal record. It may not surprise you to learn that almost all of the cases in which this is used are "social" crimes. In cases of actual crime, custodial sentences are sometimes not applied at all...again, usually for reasons of social order.

Ironically, I also can't read most of the screenshots because all sharing sites are blocked in the UK because of the threat image sharing represents to the social order.