PICK OF THE DAY

SILENT WITNESS

9PM, BBC1 ★★★★

A sturdy stalwart of the BBC schedules since 1996, Silent Witness returns for a 23rd series. In the opening twoparter, which concludes on Wednesday, Nikki (Emilia Fox, right) and her Lyell team colleagues investigate the fatal crash of a private jet carrying an American diplomat. At first, they believe they could be dealing with a coordinated terror attack, but when Thomas (Richard Lintern) is called to the apparently unrelated suicide of a successful businessman, he finds unexpected connections to the tragedy.

FOOD UNWRAPPED: NEW YEAR HEALTH SECRETS

8PM, CH4 ★★★

Lucky Jimmy Doherty treks to Thailand to investigate whether ginger really can help to fight off colds this winter, Matt Tebbutt looks into what qualifies as one of your fivea-day, while new presenter Amanda Byram asks whether spinach really can make you strong like Popeye.

THE NATIONAL TELEVISION AWARDS CELEBRATE 25 YEARS

9PM, ITV ★★★★ With the landmark 25th anniversary awards just three weeks away, this nostalgic documentary hears from some of the biggest names from the small screen, who share their favourite memories from one of television’s biggest nights. Julie Walters narrates.

BEN FOGLE: NEW LIVES IN THE WILD

9PM, CH5 ★★★ Ben packs his bag again and heads off to meet four more people who decided to quit the rat race. For the first episode, he journeys to the freezing waters of Iceland to live with his host, Hakon, a former carpenter who swapped the temptations of city life for a simpler existence on a remote island. MIKE MULVIHILL