I made the effort to see three stages of the TdF when it was in England, twice when it was in Yorkshire a few years back and once in Hampshire quite some time ago.
The two consecutive days I witnessed the race in Yorkshire were quite a contrast i.e. in Otley, which seemed semi-rural where the crowd was almost all white and the general ambience being rather genteel and in Keighley, which seemed more 'blue collar' all round and where many Indian ladies turned out in wonderful yellow saris!