Google-chrome – Change Chrome Omnibox to use Google’s NCR link

To force this I added a specific Google UK search entry and made it default:

Spanner icon -> Settings -> Basics tab -> Default search section -> Manage button

Click the Add button and enter the following:

Name: google.co.uk

Keyword: google.co.uk

URL: http://www.google.co.uk/search?q=%s

Click OK then select the new entry and click Make Default

All done!

All searches will now go through google.co.uk and not the location aware version which uses the following URL:

{google:baseURL}search?{google:RLZ}{google:acceptedSuggestion}{google:originalQueryForSuggestion}sourceid=chrome&ie={inputEncoding}&q=%s

2018 answer, pulled from Google's docs:

1. On your computer, open Chrome.
2. At the top right, click More More and then Settings.
3. Under "Search engine," click Manage search engines.
4. Find "Other search engines."
   • Add: To the right of "Other search engines," click Add. Fill out the text fields and click Add.
   • Set as default: To the right of the search engine, click More (3 dots) > More and then Make default.
   • Edit: To the right of the search engine, click More (3 dots) > More and then Edit.
   • Delete: To the right of the search engine, click More (3 dots) > More and then Remove from list.

So to add Google UK's search engine, the entry I used had "Google UK" as the Search engine, "google.co.uk" as the keyword, and "https://www.google.co.uk/search?&q=%s" as the URL.