The first thing I would do is take you back to your question about tax havens and say that it's a good thing the last budget talked about the global minium tax, which would do a lot to equalize that on a country-by-country basis.
Second, I would question the underlying assumption your question is based on. I use what I call the “soccer field and ringette arena” test. When I talk to the people I spend time with while we watch our children play sports, they don't bring this up as an issue of concern. They have more fundamental concerns. Far be it from me to tell you what your constituents are telling you—they have your ear at the door, absolutely—but if you have a specific example of a particular trade that you think is going to create a conflict of interest, it behooves you to make that statement public and put it forward.