Gregg Wallace visits the world’s biggest cider producer, which produces more than 350 million litres each year.

In the second episode of the series, Gregg Wallace visits a sock factory in Leicester that produces one and a half million socks annually.

Gregg Wallace visits a factory in rural Somerset that produces one million pots of it every twenty-four hours, while Cherry Healey helps out with the UK’s biggest blackcurrant harvest.

Gregg Wallace is in Derbyshire at an enormous cherry bakewell factory, where they produce 250,000 of the little tarts a day.

Gregg Wallace is in South Shields at a clothing factory where they produce 650 waxed jackets a day.

Gregg Wallace is in France at an enormous croissant factory where they produce 336,000 flaky pastries a day.

Gregg Wallace is in Leeds at an enormous mattress factory that produces 600 bouncy beds every day. Meanwhile, Cherry Healey learns whether there are benefits to be had from taking an afternoon nap.

Gregg Wallace is in Cornwall at an enormous bakery where they produce 180,000 pasties a day.

Gregg Wallace is in France at an enormous foundry that produces a cast iron pot every five seconds.

In Wigan, Gregg Wallace visits an enormous soup factory, which produces two million tins a day.

Gregg Wallace is in Ireland at an enormous liqueurs factory that produces 540,000 bottles a day.

Gregg Wallace is in Essex at an enormous cereal bar factory, which produces 400,000 fruit- and nut-packed treats a day.

Gregg Wallace is at a coffee factory where they produce 175,000 jars of instant coffee every day. He follows the production of freeze fried instant coffee, from the arrival of 27 tonnes of Brazilian green coffee beans right through to dispatch.

Gregg Wallace explores the Manchester factory that produces 700,000 toilet rolls a day. He begins with 940 miles away in Sweden where the raw materials, wood, is harvested from a sustainable forest of one billion spruce trees.

Gregg Wallace explores the North Yorkshire factory that produces 625,000 sausages a day. Meanwhile Cherry Healey is at the University of Chester getting the scientific lowdown on getting the best from your banger. Ruth Goodman is investigates how a German bratwurst became top dog.

Gregg Wallace explores the Nottinghamshire factory that makes 250,000 jars of curry sauce each day. Meanwhile Cherry Hawley is in Guntur, the chili capital of India, where they sell 3500 tonnes of chili each day.

Gregg Wallace is in Lowestoft at an enormous frozen food factory, where they produce one million potato waffles a day.

Gregg Wallace is in Italy at an enormous pizza factory, where they produce 400,000 frozen pizzas each day.

Gregg is in Burton upon Trent at Britain's biggest brewery. Cherry learns how 4 basic ingredients can be used to make such a wide range of beers. Ruth asks why Burton became the centre of British brewing.

Gregg Wallace is in Germany at a historic pencil factory where they produce 600,000 writing implements a day.

Gregg Wallace is in Gateshead at a cheese factory where they produce 3,000 tonnes of spreadable cheese every year.

Gregg Wallace receives some tea leaves from Kenya and follows them through the factory that produces one quarter of all the tea drunk in Britain.

Gregg Wallace is at the world's largest dried pasta factory in Italy, where they produce 150,000 kilometres of spaghetti each day.

Gregg Wallace follows the production of chocolate digestives and discovers that we are all eating them the wrong way up.

Gregg Wallace explores the Grimsby factory that processes 165 tonnes of fish a week and produces 80,000 cod fish fingers every day.

Ruth Goodman investigates the origin of Worcestershire sauce, as told by Mr Lea and Mr Perrins.

Gregg Wallace explores Ribena's Gloucestershire factory. Meanwhile, Cherry Healey is in the lab figuring out why fizzy drinks are so appealing.

Gregg Wallace receives a load of corn fresh off the boat from Argentina and follows its journey through the largest breakfast cereal factory in Europe.

Gregg Wallace follows 27 tonnes of potatoes from a farm in Hampshire through the largest crisp factory on earth.

Gregg Wallace helps to unload 27 tonnes of dried haricot beans and follows them on a journey through the world's largest baked bean factory.

Gregg Wallace visits Britain's largest bicycle factory, which produces 150 folding bikes every day, and joins a production line to make his own bike.

Gregg Wallace helps to unload a tanker full of sugar from Norfolk and follows it through one of the oldest sweet factories in Britain.

Gregg Wallace visits the UK's largest sports shoe factory to see how they produce 3,500 pairs of trainers every day.

Gregg Wallace, Cherry Healey and Ruth Goodman look at the production, science and history of bread in Britain.

Gregg Wallace, Cherry Healey and Ruth Goodman look at Britain's love of chocolate and visit one of the world's largest chocolate factories in York.

Gregg Wallace, Cherry Healey and Ruth Goodman look at Britain's history with milk and visit one of the largest fresh milk processing plants on earth.

In this Christmas special, Gregg Wallace, Cherry Healey and Ruth Goodman explore the fascinating factory processes and surprising history behind our favourite festive treats.

Exploring the fascinating factory processes behind Christmas cake, baubles, brandy and more. And why Christmas tree lights are called fairy lights. Ruth Goodman adds her own Christmas revelations by investigating how our early industrial heritage inspired Charles Dickens to write a Christmas Carol, and why we call Christmas tree lights fairy lights.

In this Christmas special, Gregg Wallace visits a factory which produces 2,000,000 tins of festive chocolate assortments a year.

Gregg Wallace is in Nottingham at an enormous party food factory where they produce 200,000 canapes every 24 hours.

Gregg catches up with the Essity paper mill in Manchester, which he visited back in 2018. The coronavirus crisis caused a huge spike in toilet roll sales.

Gregg reconnects with the Heinz baked beans factory in Wigan which he visited back in 2016. The coronavirus crisis caused a massive spike in the sales of tinned goods, and the baked beans factory upped production to deliver almost 50 million cans in just one month, nearly double the amount of tins they would normally sell in the same period.

Gregg reconnects with the Walkers crisps factory in Leicester, the largest crisp factory in the world, which he visited back in 2016. We Brits love a snack, and when the coronavirus crisis hit, sales of packet treats rose by 32% as shoppers spent more than £63 million in just one week.

Gregg reconnects with the Typhoo tea factory in the Wirral near Liverpool, which he visited back in 2017. The coronavirus crisis caused tea bag sales to soar, and the factory has upped production to produce 109 million tea bags in a week, an increase of 28 million. Throughout the episode, Gregg looks back over his original visit to the factory and the whole production process. First, he helps unload 24 tonnes of dried tea from Kenya and then follows its journey through the 28,500-square-metre factory to make the nation's favourite - good, old-fashioned builder's tea. Meanwhile, Cherry Healey travels to Kenya to see how the tea crop is picked, processed and shipped over 4,000 miles to the UK. She also learns how to master the art of making the best tea bag brew, revealing the top tips for a perfect cuppa. And historian Ruth Goodman explores how tea kept up morale during World War II.

Gregg Wallace reconnects with the McVitie’s factory in Harlesden, north west London, which he visited back in 2017. The coronavirus crisis caused a huge spike in the nation's desire for sweet treats, and sales of the firm’s chocolate digestives rose by 71 per cent, meaning in just two months, they sold an astonishing 12.5 million packets.

Gregg Wallace visits the Woodmansterne card factory in in Watford. It’s one of the largest greeting card companies in the UK, a family business sending out 35 million cards a year. He gets stuck into all aspects of the card creation process - from sketching a card design, to creating an aluminium plate for the printing process, to the guillotining of the sheets into cards and the final shipping process, which takes the cards as far afield as Australia and Singapore. Meanwhile, Cherry Healey creates a vegan Christmas feast, and historian Ruth Goodman unwraps the story of the year when Christmas was cancelled