You can do in Control Panel > Date, Time, Language, and Regional Options > Regional and Language options > Set everything there to UK (may as qwell) then click on the Languages tab then click the default to UK english, then highlight US english and click remove. Whilst there you can also click the Language bar button udner preferences and untick show the language bar altogether 😉 you’re probably goign to say it had nothing to do with that now and was some program doing it and not the OS? 😛