12.04 upgrade lost gb keyboard layout

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http://askubuntu.com – Upgraded from 11.10 to 12.04. Keyboard Layout from System Settings only shows us listed in options but /etc/default/keyboard contains: XKBMODEL="pc105" XKBLAYOUT="gb" XKBVARIANT="" XKBOPTIONS="" /etc/X11/xkb is empty, /etc/X11/xorg.conf does not exist. How do I recover UK keyboard layout so I can find # " @ etc in the right place again? Thanks (HowTos)