Roaming. Sandi Toksvig goes roaming with Alan Davies, Sara Pascoe, Josh Widdicombe and Benjamin Zephaniah. 11/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

The Food Delivery App. Hannah Fry tucks into the tech behind food delivery apps, which are now used by 24 million people in the UK. Hannah finds out how pizza made us fall in love with the internet. 2/6. Mathematician and television presenter Hannah Fry hosts a series revealing the miraculous technologies that define the modern world.

Abbey Pumping Station 2. The team returns to Leicester's Abbey Pumping Station, where treasures include a 1960s sculpture and a set of exotic boxes with an intriguing use. 24/26. 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.

Final. For the final challenges, the remaining bakers are tasked with the toughest tasks. 10/10. Twelve enthusiastic contestants face three challenges a week as they take part in a competition to determine which of them is Britain's best amateur baker.

Series 9, Episode 1. Back for his final outing as the Travel Man, Richard Ayoade dashes to Dubrovnik with comedy colossus Stephen Merchant. 1/4. Join celebrity guests as they explore a unique weekend destination with the aim of having a holiday with all the boring bits taken out.

Hiding in Colour. David Attenborough reveals the extraordinary ways that some animals use colour to hide and disappear into the background. 2/2. David Attenborough discovers the vital role colour plays in the daily lives of many species.

Sri Lanka - The Blue Train from coast to Sri Lanka's Heart. This train journey across Sri Lanka is a train-lovers trip of a lifetime to Nine Arch Bridge. Travelling along on one of the world's best-preserved Victorian-era railways we climb to over 6000 feet deep from Columbo to Ella. 5/7. Enjoy six very individual and stunningly beautiful train journeys from around the world. On each one we'll meet the people who work and live along the special rail line in six different countries.

Series 26, Episode 12. 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. 12/55. 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.

Roaming. Sandi Toksvig goes roaming with Alan Davies, Sara Pascoe, Josh Widdicombe and Benjamin Zephaniah. 11/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Rejoice!. It's Christmas, so time to rejoice with Sandi Toksvig and guests Holly Walsh, Justin Moorhouse, Chris McCausland and Alan Davies. 12/16. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Final. For the final challenges, the remaining bakers are tasked with the toughest tasks. 10/10. Twelve enthusiastic contestants face three challenges a week as they take part in a competition to determine which of them is Britain's best amateur baker.

Hiding in Colour. David Attenborough reveals the extraordinary ways that some animals use colour to hide and disappear into the background. 2/2. David Attenborough discovers the vital role colour plays in the daily lives of many species.

Floors Castle 2. Fiona Bruce and the team return to Floors Castle in Scotland. Finds include Robert Burns memorabilia, a diamond pendant and a jade figurine. 15/26. 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.

Ham House. George explores one of Britain's grandest 17th-century powerhouses - the decadent Ham House - and gets a private tour at the modernist Hampstead home of architect Ernö Goldfinger. 6/6. George Clarke explores some of the UK's most impressive historic homes.

Lumped Together. Stephen Fry asks questions on 'Lumped Together' with guests David Mitchell, Roni Ancona, Jimmy Carr and Alan Davies. 11/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

No L. Stephen Fry asks questions on 'No L' with guests Carrie Fisher, Bill Bailey, Jimmy Carr and Alan Davies. 12/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Austria. Cameras focus on Austria's stunning Transalpine railway, which crosses the snowy peaks of the Tirol. The journey begins in the historic city of Graz and heads west through famous alpine beauty spots. 2/10. Enjoy six very individual and stunningly beautiful train journeys from around the world. On each one we'll meet the people who work and live along the special rail line in six different countries.

Virtual Assistants. Hannah Fry delves into the inner workings of virtual assistants, such as Amazon's Alexa, Google Assistant and Siri, which are now found in almost half of all UK homes. 3/6. Mathematician and television presenter Hannah Fry hosts a series revealing the miraculous technologies that define the modern world.

Newcastle Civic Centre 2. Fiona and the team are at Newcastle's Civic Centre - a towering modernist building packed with technical innovations well ahead of their time. 25/26. 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.

The Final. The three remaining bakers need to produce a carrot cake worthy of winning, come out tops in a technical based on a Belgian recipe and rustle up a showstopping banquet fit for the Mad Hatter's Tea Party. 10/10. Twelve enthusiastic contestants face three challenges a week as they take part in a competition to determine which of them is Britain's best amateur baker.

Lenses. Stephen Fry asks questions on 'Lenses' with guests Jo Brand, Josh Widdicombe, Phill Jupitus and Alan Davies. 5/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Liblabble. Stephen Fry asks questions on 'Liblabble' with guests Reverend Richard Coles, Sara Pascoe, Bill Bailey and Alan Davies. 6/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Series 26, Episode 39. 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. 39/55. 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 13, Episode 10. Jimmy Carr hosts with Rachel Riley and Susie Dent. Sean Lock and Paul Foot take on Jon Richardson and Angela Barnes. John Cooper Clarke joins Dictionary Corner. 10/11. Combining two of viewers' favourite shows means that viewers get to play along, a bonus for both quiz and comedy fans alike. Jimmy Carr hosts the famous words and numbers quiz, plus etymologist Susie Dent on the letters, and maths whizz Rachel Riley on the numbers.

Series 1, Episode 3. To film maned wolves, the Planet Earth crew joined pioneering scientists in Brazil. 3/7. A behind-the-scenes look at the final chapter of the Planet Earth trilogy, which explores the greatest habitats on our amazing planet.

Episode 2. In the Byzantine city of Ravenna, Rick discovers piadinas; street food dating back to Roman times. Then in Croatia, he discovers new dishes like pasticada, goat stew with peas, and lamb peka. 2/7. Rick Stein embarks on a new gastronomic road trip from Venice to Istanbul through the countries of the former Byzantine Empire - a melting pot of east and west.

America's Lost City. Ben heads to Slab City in the Californian desert to explore an alternative community. 1/3. Adventurer Ben Fogle travels to remote corners of the world and uncovers what caused people to leave these areas, and witnesses new efforts to revitalise the islands that time forgot.

Brink of Winter. Sue Aikens must hunt for caribou before they disappear from the tundra. Jessie Holmes scouts his new land for future hunting grounds. 1/16. The brutal Alaskan winter dominates life for the hardy characters in this awe-inspiring series.

Lumped Together. Stephen Fry asks questions on 'Lumped Together' with guests David Mitchell, Roni Ancona, Jimmy Carr and Alan Davies. 11/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

No L. Stephen Fry asks questions on 'No L' with guests Carrie Fisher, Bill Bailey, Jimmy Carr and Alan Davies. 12/18. Panel game hosted in which celebrity guests have to answer questions, avoiding repeating common misconceptions and urban myths.

Series 26, Episode 12. 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. 12/55. 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 13, Episode 10. Jimmy Carr hosts with Rachel Riley and Susie Dent. Sean Lock and Paul Foot take on Jon Richardson and Angela Barnes. John Cooper Clarke joins Dictionary Corner. 10/11. Combining two of viewers' favourite shows means that viewers get to play along, a bonus for both quiz and comedy fans alike. Jimmy Carr hosts the famous words and numbers quiz, plus etymologist Susie Dent on the letters, and maths whizz Rachel Riley on the numbers.

Episode 2. In the Byzantine city of Ravenna, Rick discovers piadinas; street food dating back to Roman times. Then in Croatia, he discovers new dishes like pasticada, goat stew with peas, and lamb peka. 2/7. Rick Stein embarks on a new gastronomic road trip from Venice to Istanbul through the countries of the former Byzantine Empire - a melting pot of east and west.