TV Guide 5SELECT Friday

Eighteen-year-old Millie has a baby of her own, while 25-year-old Chloe is house-hunting with her new boyfriend, and Luke has something really big to tell the family. Sue and Noel face the biggest decision of their lives - will they have another baby or will they decide that 22 is enough?

Peter tries to save a lamb that was badly injured during birth. A rottweiler locates a bag of class A drugs - but his owner is more concerned that he has eaten another bag. Anne discovers that wearing glasses can create problems for a vet, a one-week llama takes a turn for the worst, and a difficult birth leaves a cow struggling to feed its calf

Graeme Hall meets Tracy, who got labrador Rosa to keep her company and help improve her social life. However, Rosa keeps scaring everyone away, leaving her owner more isolated than ever. The dog trainer also meets bulldog Frank, who loves to eat all different kinds of rubbish, and border terrier Griffin, who is hell-bent on terrorising the neighbourhood

Ben Fogle meets people who have moved to inhospitable parts of the world after leaving the rat race behind. Here he travels to the Namibian desert to spend time with 50-year-old Gideon David, who quit his career in life insurance to live in the largest conservation area in Africa. Ben embraces the harsh and relentless work of farm life in temperatures pushing 40C, tending more than 150 animals, repairing baboon damage to water pipes and learning how to castrate sheep with his teeth

Arthur Williams explores London, starting out at St Paul's Cathedral, which became the iconic symbol of the Blitz. At Soho's Cafe de Paris, he learns how the blackout affected the capital's nightlife, and visits London Zoo, to find out how the animals coped during the bombing

Jessica visits the zoo to research her latest novel, where a venomous snake kills an animal rights activist. Mystified as to how the black mamba could escape, the amateur sleuth tries to discover whether there was a human hand behind the incident. Angela Lansbury stars

During the making of a film, an old document comes to light that could tarnish the reputation of a Cabot Cove folk hero - and it is also connected to a murder. Angela Lansbury stars

A philandering psychiatrist, who involved his mistress in a series of hypnosis experiments, kills her husband in the heat of the moment when the pair are caught out. He persuades his distraught lover to make up a story involving two burglars, but Lt Columbo realises she is lying and goes in search of the truth. Crime drama, starring Peter Falk, George Hamilton and Lesley Warren

Bill Nighy narrates the stories of epic train journeys through stunning scenery and natural beauty, beginning with a trip from Inverness to Edinburgh. Not long after setting out, the route passes Culloden, the site of the last pitched battle on British soil. It then enters the Cairngorms National Park, home to some of Europe's finest landscapes as well as valleys steeped in Gaelic folklore. The park's station at Aviemore is home to the Strathspey Railway, where Victorian steam locomotives come to life. There is then a climb to the highest point on Britain's railway network before the train winds its way through Fife. Eventually the route crosses the Forth Bridge before arriving in Scottish capital Edinburgh, admired for its architecture and annual arts festival. Narrated by Bill Nighy

Millionaires Rick and Lorraine Gannon, daughter Charlotte and son Ben, a wheelchair-user, swap homes and lives with Michelle, her autistic son Toby, daughter Nellie and mother-in-law Sue. They discover the cost of living with disability on either side of the wealth divide, and how disability can lead to personal fulfilment and success

Lifelong friends Frank, Stephen and Moses, who grew up together in north London, get the trip of a lifetime in Jordan, where they visiting the archaeological wonder of Petra and float in the Dead Sea. They're swapping with the Smith family from Derbyshire as Elisabeth and Michael and their two children ditching their big-ticket global adventures for a budget seaside break in a static caravan near Barry in the Vale of Glamorgan

For years, London's East End was denied a new bridge because of the need to guarantee passage of ships up and down the Thames. For years, the greatest engineers of the age hunted for a design that would keep both road and water traffic moving. As Rob Bell explains, the solution came from architect Horace Jones, whose revolutionary design, with its thousand-tonne opening sections, was powered by nothing more than water. Rob also explains the bridge was lucky to survive the Second World War, having been a target for German V-1 flying bombs