Replacing values in Query Editor

Hi there

If I want to clean up a text field by removing text such as "CO" "LTD" "UK" I have an issue where if those values are within a word, they are also removed. I cannot include spaces either side of the word because quite often they are at the end of the field. 

Is there any way around this?

Is there a character I can include which tells Power BI to look for these values independently but without the use of spaces?  Jemma