For quite sometime there’s been a multitude of things client side that have affected search results, such as different computers, different browsers, different times, different data centres, different locations and so on. This has always made it difficult to track all but very strong search results positions.
When you are logged into Google you can get different results, the Google’s ‘AI’ kicks in, well sometimes and sometimes it goes into overdrive, take this for example for the term ‘Google UK’.
Gary Reid 3rd for Google UK
That’s right, that’s my blog ranking position 3 for the search term ‘Google UK’, hat tip to the algorithm 
Just to show I’m not moving the result manually here’s Webmaster Tools and it shows it as the second most popular keyword by impressions
Webmaster Tools Keywords
I know I don’t really rank for the term, I know Google is trying to out think me and give me what I want, but it’s the funniest example I’ve seen and the irony isn’t lost on me.
