Undiscovered Worlds with Steve Backshall (BBC 2/HD | 8:00pm to 9:00pm | Sunday 21st April 2019)

The naturalist explores some of the world’s most dangerous environments, beginning with a journey to the Arctic, kayaking across the world’s largest fjord.

World’s Busiest Train Stations (Channel 5/HD | 9:00pm to 10:00pm | Monday 22nd April 2019)

Documentary series exploring some of the busiest transport hubs in the world. Melbourne’s iconic Flinders Street station is not just the busiest and oldest in Australia, but the whole of the southern hemisphere.

Devon and Cornwall (more 4 | 9:00pm to 10:00pm | Monday 22nd April 2019)

New and first on More4: In Brixham, South Devon, trawlerman Dave Driver sets out to sea on his boat in search of cuttlefish. Sea fishing is one of the most dangerous occupations in Britain. Dave and his crew travel out 25 miles from the shore for an 18-hour shift. On the southern edge of Bodmin Moor, Mark and Isobelle Delbridge, one of Cornwall’s youngest tenant farming couples, are determined to make a success of their new dairy farm. They are keeping things traditional and their hand-delivered bottle milk is growing in popularity. On the northern reaches of Dartmoor National Park, horseback farmers Crispin Alford, his wife Diana and son Steve are preparing to sell their hill ponies. And back in Brixham, there’s a visit to a guillemot colony.

Scotland from the Sky (BBC 1 Scotland/HD & BBC iPlayer only | 9:00pm to 10:00pm | Wednesday 24th April 2019)

Jamie Crawford takes to the skies using aerial images to discover how people in Scotland have lived off the land over the centuries.

Grand Designs (Channel 4/HD | 9:00pm to 10:00pm | Thursday 25th April 2019)

In an epic self-build project five years in the making, Kevin McCloud follows ten pioneers as they construct neighbouring homes to create an entire street. Twenty-five-year-olds Chris and Roxie take a risk building their first home together using an untested flatpack construction system which sees 380 plywood boxes bolted together. It proves repetitive work, especially painting the hundreds of wooden cladding units, and the stress and strain of the project threatens the young couple’s relationship. Peter and Anita and their two teenagers live locally, but have outgrown their current house. Father and son hope to bond while building a dream family home with space for all. But the process isn’t all plain sailing.

All TV guide information taken from DigiGuide — www.getdigiguide.tv/?p=1&r=15119.