23:30The Apprentice USACelebrity Apprentice 4Episode 6: Australian GoldBBC One Duration: 1 hour, 20 minutes Sun 8th Feb 2015, 23:30 on BBC One CambridgeshireDonald Trump presents the American version of the business-based competition. The celebrities must create a promotional display for a brand of suntan lotion.ContributorsParticipant:Donald TrumpGenresFactualFormatsRealityBrandThe Apprentice USASeriesThe Apprentice USA: Celebrity Apprentice 4 Source: BBC Online