This week, it's the fast fashion industry, the second most polluting in the world, with Sara Pascoe leading Reduce, Reuse, Recycle week.

In the Pattern Challenge, the sewers create a zero-waste workwear jacket.

The Transformation Challenge brings a surprise as the sewers enter the sewing room to find two tents. Discarded camping gear is given new life as the sewers transform their tent into a complete outfit.

Finally, in the Made to Measure, inspired by the Make Do and Mend campaign, the sewers raid their wardrobes and those of family and friends to create fresh outfits from garments no longer worn - embracing the essence of sustainability.

It's week 4, and the 10 remaining sewers celebrate the rich fashion and textile traditions of Korea. Renowned fashion designer Eudon Choi joins as a special guest judge.

In the Pattern Challenge, the sewers take on the jeogori, a historic Korean garment now seen in contemporary womenswear and K-Pop style. In the Transformation Challenge, taekwondo outfits and colourful belts are reimagined into striking new creations.

Finally, in the Made to Measure Challenge, the sewers design evening wear inspired by the cheollik, once worn by military officials and now a symbol of modern Korean fashion.

It's Week 3, and the theme is design icons. Judges Patrick Grant and Esme Young challenge the sewers to channel fashion's most influential figures across three creative tasks.

First up, in the Pattern Challenge, the sewers put their own spin on the timeless Diane von Furstenberg wrap dress. Then, it's a bold Transformation Challenge as they turn home furnishings into punk-inspired looks, paying tribute to Vivienne Westwood.

Finally, glamour takes over the sewing room in the Made to Measure, where the sewers create luxurious garments inspired by the iconic style of Versace.

It's Week 2, and judges Patrick Grant and Esme Young put the 11 remaining sewers through their paces with three challenges themed around activewear.

First, the sewers take on a technical Pattern Challenge, constructing a seven-panel cap. In the Transformation Challenge, they give new life to unwanted cycling gear, turning it into stylish new garments.

Finally, in the Made to Measure, the sewers must create an athleisure outfit – something practical enough for the gym but stylish enough for a coffee shop.

Sara Pascoe returns to the sewing room with 12 new hopefuls for a brand new series of The Great British Sewing Bee.

In week one, judges Patrick Grant and Esme Young challenge the sewers to prove their ability to create shape. First up, the Pattern Challenge sees them crafting a tie-front blouse, using gathers to add volume.

Next, in the 90-minute Transformation Challenge, circle skirts are reimagined into brand new garments.

Finally, the Made-to-Measure challenge tests their skills with pleats as they design a perfectly shaped dress.

One sewer will impress and earn Garment of the Week, but for another, it's the end of the road as they leave the sewing room for good.