These checks are of use to prospective employers and I have heard of cases where they have been misused. They are used to see if an applicant has any convictions not just any relevant convictions. As soon as the employer receives the CRB and sees that the happlicant has had convictions, even though these are spent under the rehabilitation of offenders act(1974) The application goes in the bin.
Why does this idea matter?
The country is losing out on a potential goldmine of experience which could be put to good use as many people see the CRB check and don’t bother, also the narrow minded H.R. workers seem unable to believe that someone can change for the better