BBC Four HD SkyTV

Programmes start at 7.00pm. [HD]

4/6. Professor Ben Garrod explores how skin has evolved remarkable ways to enable animals to communicate with each other, from vibrant displays of colour to skin pouches to amplify sound. [S] [HD]

1/2. Derek Brockway walks in Dylan Thomas's footsteps around Swansea before heading to the Llansteffan Peninsula and the Three Rivers estuary. [S] [HD]

2/7. British Rail decides to close down the local station, and Audrey goes into battle. [S]

6/10. Sitcom. Richard is worried that Hyacinth's attendance at an exclusive auction is going to cost him a lot of money. However, he ends up with a very different problem. [S]

3/3. Professor Robert Bartlett explores the impact of the Normans on southern Europe and the Middle East, as they spread south in the 11th century. [S,AD] [HD]

Documentary following two Syrian film-makers as they navigate the UK asylum system. Contains some strong language and upsetting scenes. [S] [HD]

Following the imprisonment of a Russian politician, his wife campaigns to bring him home. Contains scenes which some viewers may find upsetting. [S] [HD]

1/2. In this mind-bending film, Jim Al-Khalili explores the universe at its smallest, from tiny insects to living cells and viruses, before finally arriving at the atom. [S] [HD]

4/6. Professor Ben Garrod explores how skin has evolved remarkable ways to enable animals to communicate with each other, from vibrant displays of colour to skin pouches to amplify sound. [S] [HD]

1/2. Derek Brockway walks in Dylan Thomas's footsteps around Swansea before heading to the Llansteffan Peninsula and the Three Rivers estuary. [S] [HD]

3/3. Professor Robert Bartlett explores the impact of the Normans on southern Europe and the Middle East, as they spread south in the 11th century. [S,AD,SL]

1/2. In this mind-bending film, Jim Al-Khalili explores the universe at its smallest, from tiny insects to living cells and viruses, before finally arriving at the atom. [S,SL] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

5/6. What is the most toxic animal on earth? Why is a rhino armour plated? Professor Ben Garrod discovers the complex ways in which skin helps defend animals against threats of all kinds. [S] [HD]

2/2. Derek Brockway learns how New Quay on Cardigan Bay inspired some of Thomas's greatest work, before touring Laugharne with Dylan Thomas's granddaughter. [S] [HD]

After years in the shadows, UFOs are being studied seriously. Follow scientists as they try to unravel the mystery of the strangest objects in our skies. [S,AD] [HD]

Architect Sir Norman Foster looks at the jumbo jet, a unique 'building' that flies. First broadcast in 1991. [S]

An attempt to restage the first official broadcast on British television 80 years later. [S,AD] [HD]

Dramatisation of the events of 1936, as the BBC prepares for the world's first high-definition TV service. However, behind the scenes at Alexandra Palace complications arise. [S] [HD]

A short film from 1936 that gives viewers an insight into how television came to Alexandra Palace. [S]

Profile of John Logie Baird, the man who invented television, presented by his son Malcolm. Contains scenes of flashing images. [S,AD]

Leslie Mitchell traces the origins of television, from the beginning of the 20th century to the first outside broadcast - the coronation of George VI in 1937. Contains scenes of flashing images. [S]

5/6. What is the most toxic animal on earth? Why is a rhino armour plated? Professor Ben Garrod discovers the complex ways in which skin helps defend animals against threats of all kinds. [S] [HD]

2/2. Derek Brockway learns how New Quay on Cardigan Bay inspired some of Thomas's greatest work, before touring Laugharne with Dylan Thomas's granddaughter. [S] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

6/6. Professor Ben Garrod explores how some snakes can see using heat, how crocodiles feel through their jaws, and how some animals use electricity to navigate their world. [S] [HD]

Poet John Wedgwood Clarke explores the Red River in Cornwall. Despite being heavily polluted by centuries of tin mining, it is also home to some rare, beautiful and resilient wildlife. [S] [HD]

As Britain lives in fear of invasion, squadrons of fighter pilots fend off attacks by air. [1969] [S,AD]

A repressed and bullied teenager discovers that she has special powers. Horror. Contains some strong language, some violence and some upsetting scenes. [1976] [S,AD] [HD]

Master of horror writing Stephen King talks to Mark Lawson about his book Lisey's Story and discusses the inspiration for his novels and how he battled with his own demons. [S]