It's the semi-final with just four sewers left to battle it out to for a place in the final. All that stands in the way are three challenges designed by judges, Patrick Grant and Esme Young. This week they want to test the sewers' knowledge of complex patterns and pattern cutting. For the Pattern Challenge, the sewers are tasked with making an asymmetric yoked skirt inspired by modern Japanese pattern cutting.

The three finalists take on a trio of evening wear challenges. The judges begin by asking the sewers to follow the most complex pattern yet, a double-breasted waistcoat.

Contestants make an A-line dress, alter a top and create a made-to-measure dress.

Amateur sewers test their sewing and dressmaking skills. The nine remaining amateur sewers are tested on their ability to make clothes on a miniature scale.

It’s Week 4, and the remaining sewers create zero-waste trousers, upcycle tote bags and repurpose crochet blankets in Reduce, Reuse and Recycle. week.

Under the scrutiny of Savile Row's Patrick Grant and Central St Martin's Esme Young, ten fresh-faced home sewers face three challenges designed to test their skill and understanding of basic garment construction. First the sewers follow a pattern for a woman's top made up of four pieces.

The fashion industry is the biggest polluter of our planet next to oil, so for the first time on The Great British Sewing Bee, it is Reduce, Reuse and Recycle Week.

With Joe Lycett hosting, the quarter-finalists face British and Irish fabrics week. Patrick Grant and Esme Young ask the sewers to create a ‘worker's jacket’ from linen.

Joe Lycett hosts the semi-final, as the four remaining sewers go global, taking on garments and techniques from around the world.

The competition reaches its dramatic denouement as the final three sewers tackle celebration wear challenges and the series winner is crowned.

Joe Lycett hosts as the five remaining sewers tackle challenges inspired by music and the movies, taking on garments and techniques from the silver screen. First, they must follow a pattern like none they’ve encountered before, as judges Patrick Grant and Esme Young ask them to make a dress inspired by Baby from Dirty Dancing. The techniques involved in creating the iconic dance dress include a tightly fitted bodice and perfect full circle skirt. Next up, it’s the Transformation Challenge, and just like Julie Andrews's Maria in The Sound of Music, the sewers are asked to adapt old curtains into play clothes for children. For their final challenge, the Made to Measure, the sewers take on the disco era with an outfit inspired by the movie Dreamgirls.

Scraps are put to use in Reduce, Reuse, Recycle week to create quilted patchwork jackets. Old coats are given a new lease of life, and second-hand duvets become maxi dresses.

It’s Week 5 and Art Week as the sewers take on modernist skirts, transform canvasses and make surrealist, made-to-measure dresses.

It’s the final of The Great British Sewing Bee, and after challenges including a Victoriana dress, fabulous men’s outfits and a two-in-one dress, only one sewer will be crowned winner.

Amateur sewers test their sewing and dressmaking skills. Claudia Winkleman takes the eight sewers back in time to the 1950s, when home sewing was at its height.

Amateur sewers test their sewing and dressmaking skills. It's the semi-final, and the five remaining sewers take on a set of tasks working with tricky and technical fabrics.

The competition reaches its conclusion as the three finalists enter the sewing room for the very last time, with the judges looking for cutting-edge designs.

The fabrics in the haberdashery go technical, as the seven remaining home sewers take on man-made fabrics designed for sport and the great outdoors.

The sewing competition returns for a seventh series and in week one the judges settle the contestants in with a trio of challenges based on everyday wardrobe staples - sleeveless blouses, t-shirts and dresses.

It's Week 7, and we’re going back to the 90s with cargo pants, 90s icon fancy dress and body-skimming supermodel dresses.

Contestants follow a men's trouser pattern and create a made-to-measure silk blouse.

In the final, the three finalists must create a luxury, made-to-measure evening dress.

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.

With Joe Lycett hosting, the remaining home sewers head back in time to the 1970s, attempting to revive the glamorous, rebellious and sometimes ridiculous, style of the decade.

Five sewers do battle in the quarter-final, where they must master techniques and styles from France, Spain and the Philippines.