TV Guide BBC Two Tuesday

The classroom drama returns for a new term. Headteacher Stella is forced to navigate a fresh set of challenges when her estranged grandchildren land at the school. New teacher Darius Donovan (played by comedian Jon Richardson) is soon shaking things up in the staffroom, while Jack Rimmer finds himself tackling the troubles of a new generation as he returns as school counsellor. Schuey and Agnes cause uproar when they rebel against Stella's new rules

Donte is plunged into crippling debt, so Ashton takes drastic measures to pull his dad out of this latest crisis. Stella and grandson Ben clash as the school welcomes a cohort of year six students and Debs is excited to step into Wendy's shoes for the day, but Nicky is forced to step in when things get out of hand. Jack tries to help Libby settle back into school life when she clashes with Aleena

The team restore a unique pair of cowboy boots that were found by their owner's mother in a vintage shop in the 1980s; a fragment of plaster from a kitchen wall holding a lost loved one's handwritten message; a magician's puppet who has lost his limbs and a Giles Barker award, originally given to film-maker Sid Perou

Over three rounds, contestants Hannah, John, Helen and Vince vie to find the single 'unbeatable' answer and streak ahead of the rest to make the final where they can win a cash prize. General knowledge quiz, hosted by Jason Manford

Northern Ireland chefs Colin McSherry, Lottie Noren, NIall Sarhan and Melissa McCabe cook canapes, starters and fish dishes inspired by the Olympics and Paralympics. One of the chefs cooks a courgette-based dish resembling a shot-put for a starter, while the fish dishes are a classical French surf and turf of hake and braised beef shin, monkfish with a fusion of Asian tastes and trout served two ways

Wildlife in America's mountain regions, including the Rockies and the Sierra Nevada, areas infamous for extremes of temperature from freezing winters to scorching summers. The programme examines the survival strategies employed by animals including black bears, pikas and bison, as well as parasitic plants. Plus, a look at the challenges faced by these region's human inhabitants, including ranchers leading their cattle on 70-mile journeys

Paul Martin visits the Watts Gallery in the heart of the Surrey countryside, where experts David Harper and Thomas Plant are on hand to find a selection of objects to take to auction. David uncovers a collection of British film and TV memorabilia and Thomas is thrilled by some French cameo glass. Paul is on the trail of Martians in Woking, the setting for HG Wells's sci-fi novel The War of the Worlds

The honeymooners are elated when boats bring their friends and family from the other side of the world, ready to give their opinions on their new partners And while double dates deliver some home truths, one couple decide to wave goodbye to their stranded dream for ever. Presented by Davina McCall

A glimpse into the daily lives of Stacey Solomon, Joe Swash and their five children. Stacey and Joe trade school runs for ski runs in a snowy family adventure, but Joe's big romantic surprise quickly melts into laughter when it goes wrong

The finalists travel to Athens, Greece, where they are set three challenges designed to broaden their culinary horizons like never before. For starters, they prepare a lunch for locals, including a selection of dishes chosen by TV chef Agiro Barbarigou. Day two sees the amateurs working in the kitchen of Michelin-starred restaurant Patio, mentored by executive chef Panagiotis Giakalis, then finally they are made solely responsible for service at a VIP dinner at the Akti restaurant, cooking for Agiro, Panagiotis and more of Athens' leading chefs

Final week continues with the four hopefuls asked to put their twist on a classic dish, with choices including beef Wellington, Sunday roast and a full English breakfast. Then the best three move on to the Chef's Table, where they prepare lunch for Alain Ducasse at his Dorchester Hotel restaurant in Mayfair, as well as four of his protégés - Tom Kitchin, Clare Smyth, Claude Bosi and Alex Dilling