at our Unit the LCS is done in-house by appointed LCEs, and not by CAA Examiners
The LCEs are perhaps appointed by the unit but the LCE portion of their task is caried out as a CAA Examiner. This is drummed in on the Examiners Course and all their record keeping and examinations are liable to audit by the CAA Inspector at any time. This will be enshrined in your units agreement with the CAA.