@pcutland I have got round the problem for now by deleting the search box on the speed dial and just having a normal shortcut to Google UK.

But I don't like work rounds and want it to do what it is supposed to do. Of course if I try to search from the address bar I still get Google.com. I can't believe that everyone has this problem, so ther must be a solution somewhere.

I get the standard google.com results page. I can't even work out how to delete specific google cookies. All the help files show solutions I cannot see on my 'settings' page.

I have been searching for an answer and thought I had a solution on this thread:
https://forums.opera.com/topic/34433/solved-google-search-has-wrong-country

However, after following the instructions and arriving at the correct file, I find that 'GB' is already in the text.

Yet my default search engine is still google.com