I would suggest that if you do the inspection and testing and find that the circuit is non complaint that you then do not issue a MEIWC, but instead provide written advice to the customer of the problem with the circuit and the level of urgency with which it should be addressed.
I changed some light fittings on a TT installation and then checked the circuit and found no RCD protection on the circuit as it had been removed by a previous "electrician" to "resolve" the tripping problem.
I advised the customer in detail of the dangers involved especially considering most of their lights were class I (but not mine) and provided the option of an RCBO solution but they decided to leave it as it was!
OK customer informed, job complete, move on.
I changed some light fittings on a TT installation and then checked the circuit and found no RCD protection on the circuit as it had been removed by a previous "electrician" to "resolve" the tripping problem.
I advised the customer in detail of the dangers involved especially considering most of their lights were class I (but not mine) and provided the option of an RCBO solution but they decided to leave it as it was!
OK customer informed, job complete, move on.