UK.keylayout for Mac OS X 10.2 or higher
by Matt Sephton <matt@ewtoo.org>
thanks to http://wordherd.com/keyboards/

How to install:
1. Unzip archive
2. Copy UK.keylayout to /Library/Keyboard Layouts
3. Logout and back in
4. System Preferences/International/Input Menu
5. Scroll down half-way to UK, check
6. Scroll back to top, uncheck previous setting

Keys mapped:
\ -> #
` -> \
Shift+2 -> "
Shift+' -> @
Shift+\ -> ~
Shift+` -> |
Shift+3 -> 
Option+3 -> `