@DeeKie While I'm conscious of your wish to respect your father's autonomy, I think the only way you'll be able to satisfy yourself as to whether or not he's been given good or bad advice is to get details from him as to what he was in and what he's now in.
If he was moved from a product with overly high charges to a product with lower charges, that could be good advice. Or if he was in a fund that was demonstrably wrong for his needs and objectives and he was moved into a more suitable one, that could be good advice.
As has been said already - switching from one fund to another within the same product doesn't usually cost anything and certainly doesn't generate commission for the broker, so if that's what it was, just make sure your father understands why he was switched and what he's in now.
Switching from one product to another with a different company does generate commission for the broker so you should ask to see the Statement of Suitability to see why the broker felt that such a switch was in the best interests of your father.
Possible worrying statements...
- "Switch from the fund you were in to New Company's similar fund because New Company will give you a better return than Old Company. Look at New Company's past performance. (Nobody can predict what will happen in the future and even an excellent track record in the past doesn't promise better returns in the future.)
- We will monitor your fund on an ongoing basis and we will recommend fund switches to you if we think that something's going to happen in the markets. Our team watches the markets every day, finger on the pulse etc. We will charge an ongoing trail commission for this of X% per year." (Worthless and potentially costly tinkering with funds to justify trail commission.)
Unfortunately - and this is the hard part - even if your father has received poor advice to switch products just to generate a commission for the seller, it's difficult to prove. The seller may well be able to show research that shows that Company B's funds have done better than Company A in the past. Despite my first bullet point above, if your father agreed with the seller and signed the forms, it would be difficult to PROVE that the seller has done anything wrong to the point of being able to do anything about it. Don't shoot the messenger...