I'm a bit shocked at people saying this is none of your business and to leave it alone because he has been at it a while.
It is fraud, and he is over-charging, based on his lack of qualifications.
All professional jobs require cpd to keep up with changes in the industry. What he doesn’t know from 20 odd years ago is unlikely to be relevant today
Actually its not. There are a lot of useless, usually men, working in jobs they really can't do, propped up by people paid less than them to fill in the gaps. To take one example, in engineering, I once had to deal with a case where a manager had falsely represented that he had a degree when in fact he had dropped out. He had a history of being unable to complete work involving calculations, which usually was covered up by his getting lower level staff to do it for him. However on one occasion, he had been unable to do this, had done it himself, got the amounts in a quotation wrong, and had ended up binding his company in contract to complete a job for a fraction of the price it cost to actually do the work. Redundancies resulted due to this individual's lack of ability to use maths to do equations with the accuracy required in the profession he worked in. He would have never got the job had he not lied about having a degree when he didn't.
lsatis You don't have to produce proof of your qualifications to get professional indemnity insurance. You don't have to prove your qualifications if you're sued, and being sued doesn't automatically disqualify you from continuing in the relevant profession.
Actually, since insurance is a contract uberimae fidei (in the utmost good faith), it would mean that any insurance is in fact invalidated and could invalidate the employer's insurance, if they knowingly or carelessly condoned his fraud. And in a professional job, being successfully sued for fraud nearly always causes disbarring. If it doesn't, you would most likely only be allowed to continue with a severe restriction.
Moral of the story - if you haven't bothered to put in the work to complete the qualification, you are always at risk of being found and sacked, and you deserve it. People in professions get very irritated by this sort of thing because virtually everyone else has had to put the work in to get where they are. Cheating is cheating whatever excuses you make for it.