The process took 1 day. I interviewed at G-Research (London, England) in Feb 2012
Interview
They immediately replied to my application and offered the opportunity to visit their premises for a skills test.
This was an one off test, which means that failing to get their standards does not give a second opportunity.
Very friendly environment, great and intelligent people, though were looking for something else, with more ability to write very efficient code. The company's culture though seems really interesting.
Interview questions [1]
Question 1
Due to information disclosure signed, I am unable to give more information about the test taken.