Can the Safari 6 omnibar search be changed from google.com to google.co.uk?
Solution 1:
Just delete all your google.com cookies (not the google.co.uk ones) and it will magically start working! See http://arstechnica.com/civis/viewtopic.php?f=19&t=1157369
Solution 2:
I installed a extension, called Keysearch. So that you can config some keywork to do the search. Fo example, you can config a keywork 'gguk' for google.co.uk, and in the ominibar, you can use gguk plus what you want to search.