Inside M&S - Episode Guide

Store manager Dior prepares for the move to a new £15million shop, as well as the creation of a Percy Pig product the marketing team are hoping will rescue the little-known beauty department, and after years of fighting bad reviews and poor sales, the daring and bold new women's autumnwear range.

Marks & Spencer's is investing almost half a billion pounds this year into new stores. The biggest is at Lakeside Shopping Centre, but it's a race against time to get it ready for Christmas. Cameras also follow product- developer Abbie, who wants to revolutionise the biscuit market with a new twist on traditional classics. And presenter Davina McCall pitches to the lingerie team in the hope of getting her own range stocked at M&S.

The retailer is preparing to launch hundreds of new products in a bid to stand out from rivals, including an authentic premium panettone and a festive makeover for Colin the Caterpillar. But their slow-cooked turkey and all the trimmings product is at risk due to supply issues, and problems with the development of their Christmas sandwich puts the launch in jeopardy. Meanwhile, in Essex, it's a race against time to open a new £15million store before the peak shopping season begins.