Ah, but what does matter is the position and number of keys. And that UK layout has a different arrangement than my US keyboards and many other keyboards I've seen. As a quick example, there's an extra key between the left shift and Z keys.

And if you use that keyboard without a UK layout at the software layer, you're going to have to start swapping keycaps around.

But unfortunately (or fortunately?) it's impossible to make a single keyboard perform exactly the same way in every locale because of the software layers that remap the key codes. Not when using HID or key codes anyway. I suppose someone could make a keyboard with a micro-controller that spit out specific unicode strings. Then you'd be stuck with what was written on the keycaps.