They're no longer proactive so they don't actively go out looking for crimes, neither the police nor councils, etc.
They are now only reactive, so will only act when the statistics highlight a problem. If the statistics show huge numbers of public reports about a turkish barbers, they'll eventually get around to acting.
Same with speeding, parking on pavements, anti social behaviour, it's all based on report statistics, so the more people who report, the more likely something will eventually get done.
I'm an accountant and we have to make "suspicious activity reports" for money laundering, proceeds of crime, including tax evasion. In our firm, we've made a few dozen reports over the past decade or two, and not a single one has been acted upon. I talk to other accountants and they say the same. When we are on courses about money laundering and reporting, etc., the speakers all say the same, that it's all about gathering statistics and evidence, so that eventually, HMRC, NCA and the police will form task forces to tackle specific crimes and then, if they're targetting a particular type of business, they'll use the data we've all submitted to them, but that they're very unlikely to do anything on a client by client piecemeal basis.
For the turkish barbers which have been raided, I suspect they're the ones who've had the most reports submitted by the public - there will be a reason why the police have chosen the ones they've chosen.
It's like cannabis factories in our town. Two huge ones were raided on the High Street, one being in a derelic ex-boots store and the other in a derelict ex Barclays bank - huge obvious buildings right in the heart. But despite the police officers literally walking past them every day (and being able to smell the obvious smell of cannabis - everyone else can smell it as they walked past), the police only acted when they'd received numerous reports from the general public! They're really not interested in going out and proactively looking for things anymore - too busy rushing to the donut shop!