BBC Four HD SkyTV

Peter Watkins recounts the making of his 1964 documentary Culloden. Contains some scenes which some viewers may find upsetting. [S]

...Escape to Swallows and Amazons Country. Exploring the landscapes that inspired Arthur Ransome to write Swallows and Amazons. [S,AD] [HD]

5/5. Timeshift ventures inside places of sporting achievement, scientific endeavour and male obsession - the lofts of pigeon fanciers - to tell the story of a remarkable bird. [S] [HD]

Revealing the heroic spies who helped contribute to victory in WWII. [S,AD] [HD]

2/3. Documentary exploring the paradise of Thailand. In central Thailand's forests, plains and city streets, nature finds a way of living alongside people. [S,AD,SL] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

3/3. Series exploring the paradise of Thailand. Northern Thailand, dominated by mountains and forests, hides ancient creatures and surprising partnerships. [S,AD] [HD]

A journey into the eye-opening realm of insects to explore how scientists are using traditional and cutting-edge techniques to search for a single, common insect ancestor. [S] [HD]

Documentary which follows the construction of a trailblazing 36,000-tonne steel structure to entomb the ruins of the nuclear power plant destroyed in the 1986 Chernobyl disaster. [S,AD] [HD]

3/7. In his search for the mole sitting at the heart of the Circus, Smiley sets out for Oxford to visit an invaluable friend. [S]

4/7. Smiley recalls the past and his involvement with Tinker, Tailor, Soldier and Poorman, and Karla - the legendary head of Moscow Circus. [S]

5/7. Smiley thinks that the time has come to call on Jim Prideaux, whose assignment to Czechoslovakia went disastrously wrong, with the mole at the heart of the Circus to blame. [S]