It depends on how you define “sector”. If you're talking about, let's say, farming and you're a farmer, obviously you can speak on it. If, however, you are a milk farmer and this is something specifically on milk farming, you probably should not because that clearly will affect you.
You have to put it in the context of what the sector is and whether you think it's proper to the content or not. I get a lot of inquiries on this very point from you—not from you personally, but from members of Parliament—and we give them the best advice we can on their circumstances.