VBS and ISA
Ah, yes. The Vetting and Barring Scheme (VBS) and the Independent Safeguarding Authority (ISA). And it's still anticipated that something like nine million people will have to register for vetting, assuming that the Home Office has got its sums right (which seems unlikely).
Given the increased suspicion that records of previous arrests can bring, it would be no surprise if, once arrested, someone finds they're more likely to be arrested again in the future. And it will simply be because of the prejudicial attitude that regards arrest itself as justification for suspicion.
And so, as the years go by, the number of arrests increases, with each arrest adding to the suspicion, making future arrests all the more likely. Positive feedback, though hardly positive for the victim of such prejudicial suspicion.
At some point, there'll be enough arrests on record to score enough points in the VBS that the ISA will decide that it's safest to bar that individual. This would be despite the fact that this individual has repeatedly been cleared not only of whatever they were arrested for, but for many other crimes as well, due to their DNA profile having been checked for possible matches with unsolved crimes.
Absurd, but that's how the system appears to be set up.