US keyboards have an extra-big left shift, and a small return key, with the backslash and pipe above the return. UK (and as far as I'm aware, most other Eurpopean) keyboards have a small left shift with the backslash and pipe key just to the left of the Z. The return key is nice and big, hard to miss. The button above the return is the backspace, also nice and big and hard to miss.

(And annoyingly, every single Linux installation I have ever used has mis-mapped the Dvorak translation of the key to the left of the Z, mapping it to < and >, rather than \ and |. I often have to faff about with loadkeys layouts and xmodmap layouts for several hours every time I do a new install.)