Diggers. Gregg Wallace and Cherry Healey get special access to a factory that makes as many as a hundred iconic yellow diggers every single day. 1/9. Gregg Wallace, Cherry Healey and Ruth Goodman get exclusive access to some of the largest factories in the world to reveal the secrets behind the epic-scale production of our favourite products.

Beyond Belief. Louis Theroux explores how some people's most fervent beliefs can lead to conflict. 1/4. Louis Theroux reflects on 25 years of documentaries, featuring brand new conversations between him and his most memorable contributors.

Changing. This episode explores the study of changing ecosystems across the world giving us a deeper understanding of nature. We hear about how we can work with nature to store carbon and the importance of protecting forest and the reefs. 3/3. Throughout the world action is being taken to improve our relationship with nature. This journey may have only just begun, but it's now time to take stock, to look at what we've learned, and discover ways to carve a new future in balance with nature.

Liverpool & Kent. Architect George Clarke meets teachers Simon and Sofie, whose 1930s Liverpool semi has lost its way and needs a structural redesign. 1/4. George Clarke visits Britain's historic houses to unlock their potential and create stylish abodes that are fit for 21st Century living.

Strange New World. The last few weeks of summer are upon Alaskans, bringing the need for hunting, fishing and harvesting bounty in the Arctic. 16/19. The brutal Alaskan winter dominates life for the hardy characters in this awe-inspiring series.

Series 24, Episode 4. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of. 4/55. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of.

Series 4, Episode 8. After many tough sewing challenges, the three finalists must battle to become Britain's best amateur sewer over dress shirts, little black dresses and floor-length evening gowns. 8/8. Amateur sewers take on challenges as they compete to be Britain's best home sewer. Their creations are judged by Savile Row's Patrick Grant and sewing expert May Martin.

Masterminds. Using innovative techniques, Chris Packham investigates how nature's masterminds measure up against human brainpower. 1/6. Animals have to be smart to survive. Chris Packham reveals the natural world's brainboxes.

Valencia. Richard and Sara Pascoe visit the birthplace of paella for cocktails, zorbing, a four-wheel bike ride and a hunt for the holy grail. 2/4. Join celebrity guests as they explore a unique weekend destination with the aim of having a holiday with all the boring bits taken out.

Stretched to the Limit. A look at two curiosities of nature - an animal with a super-stretched neck and another with a stretchy tongue. 1/5. Sir David Attenborough has spent a lifetime documenting the natural world and has met a great number of extraordinary creatures. This series showcases some of the most bewildering ones.

Buckfast 1. Fiona Bruce and the team head to the historic Buckfast Abbey in Devon, currently commemorating 1,000 years of worship on the site. 8/26. Experts invite the public to bring along their antiques for examination. Some find their 'bric-a-brac' to be worth much more than they ever suspected.

Liverpool & Kent. Architect George Clarke meets teachers Simon and Sofie, whose 1930s Liverpool semi has lost its way and needs a structural redesign. 1/4. George Clarke visits Britain's historic houses to unlock their potential and create stylish abodes that are fit for 21st Century living.

Series 4, Episode 8. After many tough sewing challenges, the three finalists must battle to become Britain's best amateur sewer over dress shirts, little black dresses and floor-length evening gowns. 8/8. Amateur sewers take on challenges as they compete to be Britain's best home sewer. Their creations are judged by Savile Row's Patrick Grant and sewing expert May Martin.

Masterminds. Using innovative techniques, Chris Packham investigates how nature's masterminds measure up against human brainpower. 1/6. Animals have to be smart to survive. Chris Packham reveals the natural world's brainboxes.

Series 24, Episode 4. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of. 4/55. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of.

Noodles. Sandi Toksvig natters about noodles with Matt Lucas, Jerry Springer, Cariad Lloyd and Alan Davies. 12/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Naval Navigation. Sandi Toksvig considers some naval navigation matters with Johnny Vegas, Ronni Ancona, Jimmy Carr and Alan Davies. 13/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Buckfast 1. Fiona Bruce and the team head to the historic Buckfast Abbey in Devon, currently commemorating 1,000 years of worship on the site. 8/26. Experts invite the public to bring along their antiques for examination. Some find their 'bric-a-brac' to be worth much more than they ever suspected.

Liverpool & Kent. Architect George Clarke meets teachers Simon and Sofie, whose 1930s Liverpool semi has lost its way and needs a structural redesign. 1/4. George Clarke visits Britain's historic houses to unlock their potential and create stylish abodes that are fit for 21st Century living.

Series 4, Episode 8. After many tough sewing challenges, the three finalists must battle to become Britain's best amateur sewer over dress shirts, little black dresses and floor-length evening gowns. 8/8. Amateur sewers take on challenges as they compete to be Britain's best home sewer. Their creations are judged by Savile Row's Patrick Grant and sewing expert May Martin.

Series 24, Episode 4. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of. 4/55. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of.

Aerospace 1. The Roadshow comes from the Concorde Hangar at Aerospace Bristol. Treasures include vintage guitars, a unique medal for gallantry and plenty of Concorde memorabilia. 9/26. Experts invite the public to bring along their antiques for examination. Some find their 'bric-a-brac' to be worth much more than they ever suspected.

Stratford-Upon-Avon & Hastings. George Clarke meets single father Rick, whose four-storey terrace in Stratford-upon-Avon has just one room per floor. Can the architect come up with a clever redesign? 2/4. George Clarke visits Britain's historic houses to unlock their potential and create stylish abodes that are fit for 21st Century living.

Series 5, Episode 1. Joe Lycett presents as the sewers create a wiggle dress and transform three items of denim clothing, before having to fit real live models with made-to-measure jumpsuits. 1/8. Amateur sewers take on challenges as they compete to be Britain's best home sewer. Their creations are judged by Savile Row's Patrick Grant and sewing expert May Martin.

Series 24, Episode 5. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of. 5/55. Quiz show in which contestants try to score as few points as possible by coming up with the answers that no-one else can think of.

Numbers. Sandi Toksvig talks Numbers with Colin Lane, Sarah Millican, Noel Fielding and Alan Davies. 14/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Next. Sandi Toksvig hosts the 'Next' episode of QI with Lucy Porter, Frankie Boyle, Ross Noble and Alan Davies. 15/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Series 30, Episode 7. Graham is joined by Bruce Springsteen, Anya Taylor-Joy, Anna Maxwell Martin, Mo Gilligan. With music from Florence and the Machine. 7/21. Graham Norton introduces another instalment of his trademark mix of cheeky celebrity chat and live music performances.

. In this 60-minute special, we celebrate 16 years of Britain's greatest stand-up show, Live at the Apollo. A host of stand-up stars descend on the stalls of the Hammersmith Apollo to reminisce and reveal their own secrets of the iconic theatre.. In this 60-minute special, we celebrate 16 years of Britain's greatest stand-up show, Live at the Apollo. A host of stand-up stars descend on the stalls of the Hammersmith Apollo to reminisce and reveal their own secrets of the iconic theatre.

Series 16, Episode 3. The magnificent Zoe Lyons introduces comedians Ria Lina and Tom Ward to the stage. 3/7. The best stand-up comedy from the famous London venue.

Numbers. Sandi Toksvig talks Numbers with Colin Lane, Sarah Millican, Noel Fielding and Alan Davies. 14/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Next. Sandi Toksvig hosts the 'Next' episode of QI with Lucy Porter, Frankie Boyle, Ross Noble and Alan Davies. 15/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.