Island with Bear Grylls is back after 4 successful seasons
Narrated by Bear Grylls, it features participants placed on remote uninhabited Pacific islands as a test of their survival skills. 
Participants are left completely alone, filming themselves, and with only the clothes they were wearing and some basic tools and training.
Season 1: Toughest men of UK
Season 2 & 3: Men vs Women
Season 4: The young vs the Old