DFC, your PPL should have been submitted to the CAA when the person applied for his/her commercial licence.
The SEP Class Rating and IMC Rating should be included in the commercial licence; the person has a single CAA reference number and that is all.
You cannot have one UK licence 'for fun' and another JAR-FCL licence 'for work'.
The only people signing off licence rating pages are those authorised to do so by the CAA. Only non-instructors on the CAA staff will have signed licence rating pages.