I began tracking image searches to spot new changes reported by those in the image world. The first thing I spotted was that Google appears to have added the "Maps" navigation link to the Google.co.uk pages.
The photo I spotted was at Yandle's Flickr gallery and he notes:
Google Maps is one of the default search option in th UK (at last)
To verify, I checked some older screen captures I had and Flickr had of Google UK, and it does appear to be correct. Google has just added "Maps" to the navigation in the Google UK version. Of course, the US version (Google.com) had it for a while.
Forum discussion at Search Engine Roundtable Forums.