Thanks for that info, so US ones must have an L shaped enter key as it isn't on UK ones
Actually, it seems to be about 50/50 for the US/International keyboards.
Some have the large enter key, others have a small one.
But rather than having a 102nd 'bonus' key like on the UK keyboard, the shaping of the US enter key seems to be related to where the \ ends up. Some keyboards put it to the right of a smaller right-shift key, others to the left of a smaller backspace key, others leave shift & backspace alone and eat it out of the lower-left of the enter key.
Some US keyboards have an J-shaped enter key, with the \ key stuck to the right side of the right-shift key. Others have a more-or-less rectangular enter key, with the \ key eaten out of the lower-left of the Enter.
If that makes any sense.