in make.conf:

LINGUAS="en_GB"
LC_ALL="en_GB"
LANG="en_GB"
LANGUAGE="en_GB"

###########===================



in xorg.conf:

Section "InputDevice"
        Identifier  "Generic Keyboard"
        Driver      "kbd"
        Option      "CoreKeyboard"
        Option      "XkbRules" "xorg"
        Option      "XkbModel" "pc104"
        Option      "XkbLayout" "gb"
EndSection

#=== I think the "gb" layout does it??? not sure