At Christmas - Season 1

Behind the scenes at the confectionery company's base in Bournville near Birmingham as staff gear up for the festive season, hitting the factory floor to discover how popular treats Roses are made, with the focus on the creation of the hazelnut in caramel. Historians and Cadbury insiders tell the story of how Cadbury first turned Britain on to festive chocolate, while Santa and his team prepare for the rush at Cadbury World.

Behind the scenes of one of the most secretive retailers in Britain this Christmas - Costco. In these financially testing times, cameras reveal the inside track on whether bulk buying is the best way to plan your Christmas shopping this year, as well as how to become a member of this exclusive shopping club.

With Britain facing its toughest December in memory, this programme goes behind the doors of the budget supermarket to find out how it is preparing for Christmas - and how it keeps its prices down. The Wynne family put Lidl through its paces by trying out its turkey and trimmings, there's a Christmas pudding taste test and a look at the store's decorations and random gifts.

Ex-employees and industry experts reveal the tricks of the trade used by both retailers to draw in customers at Christmas time, from Harrods' opulent window displays to Aldi's cheeky 2022 advert. Foodie friends blind taste test some of Aldi's and Harrods' biggest sellers this Christmas - with surprising results. From panettone to Christmas crackers and champagne, which retailer comes out on top in terms of taste and quality?