http://en.wikipedia.org/wiki/Broadcaste ... arch_Board
Laut dem Wiki-Artikel läuft das auf der Insel ab wie hier in Deutschland:
Participating families have a box on top of their TV which tracks the programmes they watch.
Currently, BARB have approximately 5,100 homes (equating to approximately 11,500 individuals)1 participating in the panel. The box records exactly what programmes they watch, and the panellists indicate who is in the room watching by pressing a button on a remote control handset. The data is collected overnight and published as overnight ratings at around 9.30 the following morning for use by TV stations and the advertising industry. The following week, final figures are released which are a combination of the overnight figures with 'timeshift' figures (people recording a programme and watching it within a week). This means that with a total UK population of 58,789,194, according to the 2001 census, each viewer with a BARB reporting box represents over 5,000 people.
Wenn sich TV-Zuschauer eine Sendung innerhalb eines bestimmten Zeitfensters ansehen (ich sag jetzt mal 2 Stunden), wird das auch in den Auflistungen des nächsten Tages mit aufgeführt. So ist es zumindest derzeit, wenn man sich die gängigen TV Seiten mit Quoten aus GB ansieht.
