The Week: Media news - C4 signs to 'bookable trails'

Channel 4 has signed up to Sky's "bookable trails" service, which allows viewers to set a reminder during a promotion for a Channel 4 programme by pressing the green button.

Once viewers press the green button, a prompt appears on screen to remind them to watch the programme, while Sky+ users are also given the option to record the show. Channel 4 is the first broadcaster other than Sky to offer this service.