Lol, ban them and write them a strongly worded letter too. That will show em

Is it my perception or British police is a joke?

WAT?

Not that different from the USA. Rob someone? Illegal. Launder the money afterward? Double illegal. Split the money into smaller amounts so that it's less likely to get caught? That's structuring and now the robbery is triple illegal. Rob the person 'cause he's black? Hate crime. Quadrupel illegal.