SAS: WHO DARES WINS: JUNGLE HELL

Channel 4, 9pm

Billy Billingham, an expert in jungle warfare, takes the lead for a new series of the reality show,

this time in Vietnam, as he and ex-special forces personnel Chris Oliver, Jason Fox and Rudy Reyes put 20 hopefuls through a recreation of the jungle phase of SAS selection, which includes a waterfall abseil.