The real British Mac keyboard
You bought a mac in the UK only to find the keyboard layout isn’t fully British or fully American. See Wikipedia. There’s a pound symbol but the at, hash and quotation marks don’t seem quite right.
You’ll want to go to http://liyang.hu/osx-british.xhtml for a fix for snow leopard.
If you’re thinking that it’s the “mac way” and you should accept it and live with I have to totally disagree. Any system should should be configurable to meet the user’s needs and imposing only one method of doing something is counter productive. It feels good to type this article on a keyboard knowing what each key should output rather than rewiring my brain.