For ConfTool Pro we can also provide a version in British English (and also Canadian English), but the American English version is installed as default.
Please contact us so that we can install the British English language file for you.
You can do further updates to the wordings if you go to
Overview => Settings => Wordings and Phrases
Enter the term to be changed here and you will be offered the respective wordings/phrases for possible changes.
Please note: If you find any errors in any of the translations of ConfTool, please get back to us, so we can fix the error for good.