Does that give you the .co.uk or the .com results?
When I tried, I set it to .co.uk but still got shown the .com results.
When you go into your google account it is related to your domain and the campaigns you have active and nothing else.
You select the keywords and enter them. If you have multiple campaignes it will show you the relevant results for the the keywords you enter. the keywords you enter must be the same as in your campaignes.
Remember that if you are down the list, no matter how much you bid, not everyone can be at the top of the list