Default UK English on my Lenovo C470 PC?

I have got to keep changing the language on this PC, which I bought yesterday, from US English to UK English. How do I set it up so that UK English is the default language?

Depends on what the operating system is, but you might need to change the keyboard language;
http://www.online-tech-tips.com/computer-tips/change-keyboard-language-in-
Or program Windows;
windows/http://windows.microsoft.com/en-US/windows-vista/Change-the-country-or-region-setting
Regards, Bob.