Yes, that's possible.
As I suggest in my brief, if what you want is a perfect match in Parliament to political opinion, if 25% of the people think this way and they will have 25% of the MPs, then proportional representation is the way to do that.
There are many strong points to be said for proportional representation. The reason I didn't dwell on it at length in the brief or in my comments today is that it would be a far bigger change. It would be a radical change, moving away from single-member electoral districts, etc.