You need to change the lines below in /etc/X11/xorg.conf,
Code:
Section "InputDevice"
Identifier "Keyboard1"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
to
Code:
Section "InputDevice"
Identifier "Keyboard1"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
You may also need to run system-config-keyboard.