The key difference between the USA and the UK is climate.
America has a great range of climates including almost all the extremes and many places where the local climate varies greatly through the year. In Britain, by contrast, the grass is green all year round. We have neither baking summers nor icy winters.
Why does this matter? Lizards are cold blooded, and require a benevolent temperature in their environment. The Lizard People cannot thrive in America, which is run instead by the Illuminati.
Why does Britain still have a monarchy, while Americans are allergic to the concept of inherited leadership? Because only the descendants of Lizard People are Lizard People, whereas the Illuminati, being merely a society of humans, can recruit their new members.
Why did the British Empire disappear, while American Imperialism is increasing? Because the Lizard People couldn't tolerate the climates of the colonies. The Illuminati, on the other hand, have no such limitations and naturally wish to increase their influence. In particular they are bitter rivals of the Lizard People.
Why is Britain so sharply divided North-South, so that the South has the bulk of the wealth, prestige, and influence, and parts of the North are almost a third world country by comparison? Why is Scotland so sparsely populate? Because even within the borders of our little island, the slight variation in climate affects the Lizard People.
Why is Britain so wary of the European Union? Have you never remarked the similarity in concept between the EU and the US? The EU is an Illuminati incursion across the Atlantic. They wish to entice or coerce Britain into ever closer union until finally it has surrendered its autonomy and the Lizard People are powerless at last.
Why are USAliens so very fond of their gas-guzzling SUVs? Climate change would destroy the Lizard People.