Martha Kearney visits Wallasea Island in Essex, the largest manmade coastal nature reserve in Europe. It was created from the 3 million tonnes of London clay that were excavated in the digging out of the Elizabeth Line.

Producer: Beth O'Dea

The Stroudwater canal in Gloucestershire was built in the 1770s. It brought coal to the mills along the Stroud valleys, which had become an important centre for the manufacture of woollen cloth, but the arrival of the railways in the mid 19th century led to the canal's decline and eventual abandonment. A mile-long section of it was filled in when the M5 motorway was built in the 1960s, cutting the canal off from the rest of the inland waterways network. Now ambitious multi-million plans are underway to restore and re-open the "missing mile" and reconnect the canal.

Martha Kearney visits the Stroudwater canal to see how the work is going. She talks to volunteers, and finds out what difference the work will make to the canal - as a local amenity, as a tourist attraction and as a wildlife corridor.

Producer: Emma Campbell

Martha Kearney visits the unique cave dwellings at Kinver Edge that were lived in until the 1960s. Cosy cottages were built into the soft red sandstone with windows and doors and families lived in them for generations. Martha looks around a cottage which has been restored as it was when it was lived in and hears about the family that lived there. She also finds out about the heathland restoration project which is bringing rare wildlife back to this valuable sandscape. And she meets Brett Westwood to try and track some of it down.

Producer Beth O'Dea

https://www.nationaltrust.org.uk/visit/shropshire-staffordshire/kinver-edge-and-the-rock-houses

Hedges are such a traditional part of the British landscape that most of us don't give them a second thought. They're usually associated with the enclosures of the 17th-19th centuries, when the medieval farming system gave way to enclosed fields surrounded by hedges - designed to keep sheep in and people out. But, as Martha Kearney finds out, many hedges are far older than that - going back thousands of years in some cases.

In this programme, Martha explores the history and future of the hedge. She learns that there are an estimated 400,000 miles of hedgerow in Britain, despite the fact that many hedges were grubbed up and destroyed in the years since the Second World War. She talks to a wildlife expert, who explains why hedges are so important for wildlife and outlines the vital role they have to play in the ecosystem.

Martha visits a hedge-laying course in Devon, where trainees are learning this ancient skill, and tries her hand at the craft using a billhook. She discovers that Devon has a hedge style all of its own.

Producer: Emma Campbell

It's an ancient hunting ground with thousands of 'veteran' trees. Henry VIII visited often as it was the seat of the Seymour Family at nearby Wolfhall. Martha visits the forest to learn about its past as well as how ecologist Andy Harris and forester Nikki Morgans manage this special site and aim to 'future proof' it protecting the ancient trees and wildlife for the next thousand years. Historian Graham Bathe helps her measure one of the thousand year old trees and Emma Heard who produces the Weird Wiltshire blog recounts tales of hauntings from the forest.

Producer: Maggie Ayre

The Mourne Mountains in County Down are home to Northern Ireland’s highest and most dramatic peaks - a landscape often shrouded in cloud and rain. Yet in recent years thousands of fires have broken out across the range, the majority believed to have been started deliberately. Dry weather and hotter summers linked to climate change have made conditions even more hazardous, alongside the degradation of peat bogs and increased soil erosion.

Martha Kearney visits County Down to hear how local people have been affected, including farmer Sam McConnell and mountain rescue volunteers Neville Watson and Alwynne Shannon. She also discovers what is being done to mitigate the devastation, meeting lead ranger James Fisher and wildfire recovery ranger Linus Voksepp from the National Trust to learn about their vital restoration work.

Producer: Eliza Lomas

Have you ever heard of a black poplar? You've probably seen one, at least in a painting, even if you didn't recognise it as such. The black poplar is Britain's most endangered tree, and features in Constable's famous work, The Hay Wain. Martha Kearney is in Suffolk to see black poplars at Flatford Mill, the location in the painting, and to talk to botanical artist Ruth Wharrier about painting from nature. With tree wardens David Appleton and Fe Morris, Martha surveys new trees on the riverbank nearby. She finishes by visiting a new clone bank of trees at Jimmy's Farm, which are thriving between the wolves and polar bears. Without active support, this native British tree could disappear from our countryside altogether.

Suffolk Tree Warden Network: https://www.suffolktreewardens.org.uk

Producer: Beth O'Dea

Tucked away in a wooded valley on the outskirts of Bristol is a magical woodland nature reserve, Snuff Mills. Helen Mark discovers what lies beneath the trees, a now peaceful place with a history of heavy industry, where milling and stone quarrying has left behind a stunning playground for walkers and climbers. Local residents John, Beryl and Margaret grew up next to the quarry and witnessed its transformation from their secret playground to a busy public park. Engineer Geoff Wallis helped to literally unearth a fascinating piece of industrial history, and Steve England shows Helen the natural secrets of the valley.

Following the stones of the quarry Helen crosses the river and finds the grounds of what was once Bristol’s asylum and – Helen hears from volunteer Anwyl Cooper-Willis - a landscape carefully designed to be therapeutic for patients and speed their recovery. But where does the name Snuff Mills come from? Is it really one of the most haunted places in Bristol? And which Hollywood star has a connection with the Asylum's story?

Presented by Helen Mark

Halfway between Orkney and Shetland, Fair Isle is one of Britain’s most isolated inhabited islands. It's famous for knitting and birds, and those still form the basis of the island's economy, as Martha Kearney discovers.

As an inviting rock in the North Atlantic it’s a magnet for migratory birds, with exhausted individuals blown off course regularly adding to a long list of unusual species recorded by the local bird observatory. Martha joins the island’s Head of Ornithology, Alex Penn, to ring some visitors and sit for a while with Britain’s friendliest colonies of puffin.

French knitwear designer, Marie Brahat introduces Martha to her flock of sheep and gives her a lesson in turning their wool into the unique designs of Fair Isle knitwear. School teacher Jonathan Pye is the newest arrival on the island, currently dealing with a school roll of just two pupils - brothers Luca and Anders.

Producer: Alasdair Cross

Martha Kearney visits the Menai Strait - the stretch of water which separates Ynys Môn or Anglesey from mainland Wales. She learns about its treacherous tides and hears about the history of its two bridges, both built in the 19th century to improve travel between London and Ireland. The Menai Suspension Bridge was designed by Thomas Telford and will celebrate its 200th anniversary at the start of 2026. The newer Britannia Bridge had to be completely rebuilt after a disastrous fire in 1970.

Martha meets an academic from Bangor University who explains how ocean physics make the waters of the Strait so dangerous. At low tide she braves the pouring rain to go rock-pooling with a wildlife expert, who explains why the Strait is such a special habitat for marine life. She also visits Church Island - a tiny island in the middle of the Strait which is home to an ancient church - and meets the people who look after it.

Producer: Emma Campbell