What if you are a US based SEM and manage PPC campaigns for a company that is targeting UK consumers? How do you view the ads, as if you were in the UK, so that you can see what needs to be tweaked? That is the question of a Search Engine Watch Forums thread.
What is suggested in the thread is to add this extra variable to the end of the URL (&gl=uk). What that does is tell Google that you want to see UK results. For a complete list of country names, visit here.
Sometimes then you can get stuck with the localized results. I talked about how to get back to your default setting here.
Forum discussion at Search Engine Watch Forums.