[ad_1]
Hi,
We are using ISO 639 language codes: https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes
UK is the 2 letter language code for Ukrainian. I think you are confusing it with a country code.
It is possible for you to generate language selector links with [gt-link] shortcode and display a different label for langauge. You can possibly use that to change if you really need to. Please read more info about it in Positioning tips in GTranslate settings page.
Thanks! 🙂