This is what i dont get.
So i have to issue a certificate to sign up to be able to issue a certificate?
Is it that you don't get the difference between, or separation of, the Wiring Regulations and the Building Regulations?
For the work you describe you have to issue an EIC (assuming you want to comply with BS 7671). In the sense that there is no prohibition
per se,
anybody may issue an EIC for their work, registered/unregistered, qualified/unqualified.....
The work you describe is also notifiable, and so will also require a Building Regulations completion certificate to be issued. You don't do that directly, what you do,
if you are registered, is to certify to your scheme organiser that you complied with the Building Regulations and they organise the issuing of the Building Regulations certificate to your client.
In order to register you have to show the assessor that you work to BS 7671 so you will show him the EIC, if you use this job as one of the ones to be assessed on.