No that is not so, certainly as far as Enhanced Disclosure and Barring Checks (which is what CRB checks are now called). "Locally held" information can also be included in the disclosure. This is an extract from the latest guidance on the scheme:
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What kind of information can be considered for disclosure?
An Enhanced Disclosure and Barring Service (EDBS) check can include Convictions, Cautions, Warnings and Reprimands all of which are, usually, disclosed automatically, as per the legislation, after old & minor records have been filtered and removed. But that is not all: an Enhanced Certificate can go further than that. The courts have considered just what the authors
intended by those words and concluded that 'any information‘ can include (but is not limited to)
- incidents for which individuals were never arrested, charged or prosecuted
- incidents for which individuals were found Not Guilty in a court of law (in certain circumstances)
- incidents which were dealt with other bodies other than the police (such as Local Authorities in their disciplinary processes; employers; schools; hospitals etc.)
- third party information
- information about people other than the applicant
Many people believe that only criminal convictions can be disclosed, but the legislation does not limit police in this way. It is also the case that, even if a person was acquitted of all charges (found Not Guilty), information may still be disclosed if the Chief Officer believes that it passes the required tests
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Jobs that involve caring for, supervising or being in sole charge of children (or vulnerable adults) call for an enhanced DBS check to be made and it is very likely that the sort of information simon refers to will be disclosed in that check. As Peter says, there is no way to remove such information from police records as it is a matter of fact.
There is an appeals process if the applicant believes that there has either been a mistake made or the applicant believes that information has been disclosed that should not have been:
https://www.gov.uk/disclosure-barring-service-check/appeals-and-disputes
However, although I have not checked, there are bound to be precedents where the sort of stuff simon mentions has been challenged. My view, looking at the latest guidance, is that such challenges are unlikely to succeed.