So let me understand this,

IF a customer decides he doesnt want the same company which carries out the test to do the repairs...this would be the procedure:

Step 1
If an inspector carries out an inspection report it should be his responsibility to issue a COC for the part of the electrical installation which he has tested and is compliant.

Step 2
If he finds faults in the installation, he should attach a faults list with his compliance certificate for the parts of the installation which doesnt comply.

Step 3
The electrical contractor which then carries out the repairs as per the list which was created by the inspector (because the inspectors charges for his inspection) will then issue a second COC for the work as per the list.

Just imagine the chaos in an already chaotic industry.