BBC Four HD Technical problems frustrate Bendor and Emma's investigation of a 300-year-old portrait. 2026-09-29 Every year, spectacular seasons transform our planet. This special explores the drama of autumn and how life on earth adapts to the vast changes that occur as winter approaches. 2026-09-29 Programmes start at 7.00pm. 2026-09-29 2026-09-29 2026-09-29 2026-09-29 Programmes start at 7.00pm. 2026-09-29 Liz McIvor charts the struggles of the builders and engineers tasked with creating a landscape of canals over the rugged terrain surrounding the Pennine hills. 2026-09-29 On the first leg of the trip, Timothy misreads the tides near Fishguard, visits Shane's home town of Aberystwyth and finds a lovely cove at Porthdinllaen. 2026-09-29 Stately sitcom. Audrey helps Richard catalogue his antique china, only to discover one piece has been mislaid. 2026-09-29 Sitcom. To the vicar's dismay, Hyacinth volunteers to befriend a group of senior citizens on a day out. But she has taken on more than she can handle. 2026-09-29 Anne makes her play for the biggest prize in the kingdom, and in doing so changes the course of British history. But the Boleyns have no idea of the high price they will have to pay. 2026-09-29 The incredible story of three of the most influential men in football history. 2026-09-29 The extraordinary story of a strange cult which came to light in 2013. Contains some scenes which some viewers may find upsetting. 2026-09-29 Liz McIvor charts the struggles of the builders and engineers tasked with creating a landscape of canals over the rugged terrain surrounding the Pennine hills. 2026-09-29 Anne makes her play for the biggest prize in the kingdom, and in doing so changes the course of British history. But the Boleyns have no idea of the high price they will have to pay. 2026-09-30 On the first leg of the trip, Timothy misreads the tides near Fishguard, visits Shane's home town of Aberystwyth and finds a lovely cove at Porthdinllaen. 2026-09-30 The extraordinary story of a strange cult which came to light in 2013. Contains some scenes which some viewers may find upsetting. 2026-09-30 Programmes start at 7.00pm. 2026-09-30 2026-09-30 2026-09-30 2026-09-30 Programmes start at 7.00pm. 2026-09-30 Liz McIvor recounts the story of 'canal mania', the period of activity that helped develop Britain's modern financial economy, now centred in London. 2026-09-30 Timothy and Shane encounter problems with buoys when trying to dock at Liverpool, but Piel Island near Barrow-in-Furness finds them in the company of royalty. 2026-09-30 An ancient grave: a woman, a child, circumstances of death unknown - researchers in Germany reopen an archaeological cold case from the Mesolithic period. 2026-09-30 Chris and Xand van Tulleken look at what keeps the human body alive, including reflexes, damage repair mechanisms and the immune system. 2026-09-30 Ladislaw vows to quit Middlemarch for good once he learns the terms of Casaubon's will. Lydgate's financial problems worsen. Fred declares his love for Mary Garth. 2026-09-30 The Lydgates' marriage grows increasingly bitter with the prospect of bankruptcy. The return of Raffles sets off a train of events which change the lives of everyone. 2026-09-30 Contemporary artist Gillian Wearing celebrates the legacy of Victorian novelist George Eliot in an experimental film made up of a diverse cast of people. 2026-09-30 Saul David looks at how generals have met the challenge of moving armies. 2026-09-30