A survey by Starcom MediaVest Group has now indicated that 90% of the UK's adult (over 18) population watched the Olympics through a combination of TV, PC, mobile, tablet and social media; heralding a shift in viewing behaviour. Some 21.9 million viewers watched at least some of the around 2,500 hours of live coverage provided by the BBC over 24 dedicated video feeds over various platforms, including the interactive TV Red Button.