I see that Google has made it even more difficult to disable the Google Instant feature.
Previously, there was the Disable Instant Search button on Google’s home and results pages. To disable Instant Search now, click on the clog in the right hand corner, next to your email address.
This takes you to the Preferences page. Scroll to the bottom of the page and then select the Do not use Google Instant option and hit Save Preferences.
A quicker way to shut down Google Instant, particularly if you have cookies disabled is to head straight to www.google.co.uk/webhp?complete=0 and add this to your bookmarks/make it your homepage.