I tried 'googling' for Eurosport's UK average viewing figures, not much given away.
I did see how fragmented their programming is as they recently announced all sort of sport deals for various countries, PGA golf, Football etc but only in certain markets.
I did find one article which lauds their reaching 50 million viewers for the Le Tour last year (World wide I'd imagine)
HERE
Figures from an old UK article state an average of 65,000 viewers watching live cycling broadcasts in 2011...
HERE
18 million watched 24 Hr Le Mans in 2013
HERE
Andy Murray..
the big lanky Scot is driving up tennis ratings, Andy retires then we might go back to less tennis.