Since it wasn't (originally) immediately clear, I'm talking about the Mac keyboard below.

To me it would seem like a good move to standardize (at least for the UK) on the US layout with minor keycap changes. For instance in the UK you'd place the £ up top at number along with # - and you'd type them with inverse modifiers compared to a US layout. Shift and Option in Mac OS. Similarly I suppose for the € which requires Shift+Option+2 in the US layout. It can be swapped with ™ which only requires Option.

I really can't stand that janky return/enter key on the Apple UK keyboard.