Read this: BBC Red Button: BBC Trust Service Licence Review
Summary: This review follows a public consultation undertaken in late 2009, which produced over 5,600 responses, and included a study of the BBC's own research into how viewers engage with the service. I have captured the key points below but the full report can be read on the BBC Trust website. Wide usage The review shows that BBC Red Button has a large and varied audience. - bbc.co.uk
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