A behind the scenes look inside the supermarket at Christmas. Following colleagues and suppliers at every level, as the crucial festive countdown begins.

With exclusive access to Marks and Spencer headquarters, stores and staff in the build-up to Christmas, the iconic retailer is preparing to launch hundreds of new products in a bid to stand out from rivals that include an authentic premium panettone and a festive makeover for Colin the Caterpillar.

Cameras are invited inside every corner of high street giant M&S during their busiest time of year. In Bristol, staff prepare to open a brand new store and there's a behind-the-scenes look at the creation of this year's experimental Christmas sandwich and the world's first snowing chocolate box.

A behind-the-scenes look at M&S Food as they develop a delicious, innovative health range to keep up with the trends of the new year.