Just used Google trends UK in an attempt to get some more data on this. Google capture data on internet searches by subject, region and time, you can select a subject, in this case Leicester City FC and then compare with up to 4 other subjects. I know this is not as good a seeing the addresses of match going fans, but does provide an indication of interest in a team by area. I have just searched leicester city, f****t, derby and c*v over the last 12 months, changed sub region to 'city' and included low data locations. No surprise, the further you get from leicester, the lower the share of support, so Kegworth is mainly forest and derby with some leicester, loughborough majority leicester then forest, areas immediately surrounding the city almost all leicester. If you were just to compare leicester with the greedy 6, it doesn't paint a great picture, lots of support for man united and Liverpool in areas that really should be leicester! Give it a try if you're interested