A few questions - if I may?

5 years ago I purchased my property and received an Electrical Certificate of Compliance.

Today, I am told that the wires in my roof are not compliant, that certain circuits should be on earth leakage and some other electrical jargon that I don't know anything about except it equals bucks going out. These would have all been a problem 5 years ago as nothing has been touched since then.

Is there some recourse against the person who supplied the certificate
and if so how do I track him down - I only have his name,ID and a accreditation no that is on the Certificate???
Can the current electrical company called out to fix a fault, threaten to switch off my mains and my business, as a result of the current non compliance?