21:00Goodnight BritainEpisode 1BBC One Duration: 1 hour Wed 28th Nov 2012, 21:00 on BBC One WalesNight vision cameras discover the strange world of our problem sleepers.ContributorsPresenter:Sian WilliamsExpert:Kirstie AndersonExpert:Jason EllisSeries Producer:Carrie BrittonSeries Producer:Michael DouglasDirector:Marcus SulleyGenresFactualFactualHealth & WellbeingSeriesGoodnight Britain Source: BBC Online