By default, the =IMPORTFROMGOOGLE() functions outputs Google results as seen on google.com.
But using the “domain” option, you can force the function to retrieve the Search Results from any other Google domains.
The domain option must be specified as the 3d parameter of your =IMPORTFROMGOOGLE() function:
=IMPORTFROMGOOGLE("webpage URL","title,body","domain:.co.uk")
Here is the list of the Google domains available.