I wasn't surprised that keyboards were slightly differently arranged in Singapore. I was very surprised that English keyboards are arranged differently, and not in an insignificant way.
What I had great trouble with was that the @ symbol was not where we are used to it being. Now if you have been used to hitting the @ symbol above the 2 going back to the days of huge Remington typewriters, like forty odd years, you can guess that I made a lot of use of the backspace key correcting. I think the @ was about where our full colon is.
I also forget where the £ symbol was, but I expect the differences come from the need to have a £ symbol. I suppose there was a € for Euro on the keyboard too, which we don't have.
Fortunately the qwerty part was the same.