Location Column Country showing multiple values for same Country

Hi,

I'm having an issue using the Location column that it is showing different values for the same Country. I have a list of 200+ venues, mainly in the UK but some are being displayed as GB and some are being displayed as United Kingdom in the Location Column : Country, this is causing some issues when displaying this in powerapps as the filter functions then have two values for the same place. Is there a way to format the column to always be United Kingdom? 

Thanks