hi you cannot get CRB checked if you are self employed it has to be done through an organisation
this what i have copied from CRB website -
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Who can apply for a CRB Check?
CRB checks cannot be obtained by members of the public directly but are only available to organisations and only for those professions, offices, employments, work and occupations listed in the Exceptions Order to the Rehabilitation of Offenders Act 1974.
For this reason your application will be processed either by your employer, if it is registered with the CRB, or a third party organisation, called an Umbrella Body, which is registered with the CRB.
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How do I apply for a CRB Check?
An individual cannot make an application for a Disclosure directly, and the Disclosure service does not apply to those people who are self-employed. This is because there needs to be an independent person who makes the decision to employ an individual having assessed that they pose no threat to either children or vulnerable adults in their care. If a person is self-employed there is no independent third party to make that decision.
There are two ways of applying for a CRB check. You will either be asked to:
telephone the Disclosure application line on 0870 90 90 844, in which case you will need to provide the Registered Body name and number (Please have this information to hand when calling), or
complete a paper application form handed to you by the person who asked you to apply.
In both instances, you will have to provide evidence of your name, address and date of birth, along with the Registered Body name and number, and the level of CRB check. This will help the person who asked you to apply, confirm your identity.
for example: I teach in a local FE college - so they applied for CRB check on me after I filled in the application form and returned to the college
I also invigilate exams for another college and they applied separately for a CRB check on me aswell
A CRB check is more or less invalid after the check has been done anyway its only good for that point in time at which it was applied to show that you dont have any convictions/records/warning etc - as one of these could be recorded against you at any point after the date it was issued - so each college I go into will apply for a new CRB check on me - Have had 3 done now in last 18 months
hope this helps
Nicola