Yes i fixed it like this:

As root, locate the script named mkxorgconfig (if i'm not mistaken). It's a script that knoppix executes at boot to recreate xorg.conf with the settings present in the script.

Find the keyboard stanza in the script and replace the keyboard layout with "gb". It will be set to some $parameter. Just delete that and replace it with "gb".

Hope this helped.

good luck