As mentioned elsewhere in the thread, DDG also supports use of "site:amazon.co.uk." So, you have the option to memorize the short form for what I presume to be

As mentioned elsewhere in the thread, DDG also supports use of "site:amazon.co.uk." So, you have the option to memorize the short form for what I presume to be the sites you personally search for the most. This is interesting: it is one way to allow for a better search experience through personalized search options without using data collected about me.