Ran that ... not quite the result I expected!

Selected 'from arch list', 'qwerty' and 'British', command ran, small 'uk' appeared briefly after the keymap search - seemed alright, but in practice it had the exact opposite effect from intended.

Instead of getting a GB keyboard layout in boot, console, command line in KDE, applications, etc., I had a US keyboard override everywhere, even to the extent of overriding the GB keyboard setting within the KDE desktop (and it still showed 'GB' in the icon on the footer bar) and any applications launched from it (including OpenOffice).

For the moment I have cheated. In '/usr/share/keymaps/i386/qwerty' I have saved the US keymap as an 'old' file and created a symbolic link to the UK keymap file. Works for me!