Righty, I'm looking at my own enhanced disclosure...
What is gives is a list of categories where records may be held on you. These categories are:
Police records of convictions, cautions, reprimands and final warnings
Information from Section 142 of the Education Act 2002
Protection of Children Act list
Protection of Vulnerable Adults list
Other information at the Chief Police Officer(s) discretion.
Like the vast majority of people, it says simply "none recorded" in each of the categories.
I believe for the standard disclosure, it only lists the conviction, caution etc. category.
I don't think employers generally see the CRB check. A copy goes to the registrar (who will represent the employer) and the applicant (the individual concerned). Usually the registrar, such as a nanny agency, will simply state to their clients that the applicant is "CRB-checked".