Another issue is that location, even 60 miles, can affect salary enormously. Go even to some of the suburbs of London and it's a lot less then inside London. Sa

Another issue is that location, even 60 miles, can affect salary enormously. Go even to some of the suburbs of London and it's a lot less then inside London. San Francisco Bay Area is a huge anomaly with in California. Berlin commands lowersalaries done the rest of Germany. And to get enough data across different sectors which pay differently and roles which are not quite the same as described elsewhere but titled similarly, seems to be quite difficult. How do your data compare with glassdoor for example?