How balanced is Parliament?

After showing the imbalance of the UK population in this post I wanted to look at how MPs are balanced. I have looked at this before using pie charts but my new toy is pixel (px) art.

The UK has 650 MPs representing the four constituent countries of Wales, England, Scotland and N Ireland. I will use a 255 x 255 px square. This gives us 65,025 px which works out as a scale of 1 MP = 100 px. For consistancy I'll try and make the shapes as similar to how  I did them for the population square so that they can be easily compared.

Parliament (1 MP = 100 px)