How Do They Really Do It?

Discovering the methods Subway uses to create its iconic sandwiches.

A look at what makes the perfect British roast dinner, from how to make the best roast potatoes to the ideal size and dimensions of a Yorkshire pudding. The programme goes behind the scenes at restaurant chain Toby Carvery, which serves millions of roast dinners across the country every Sunday.

Documentary delving into the secrets of the UK's biggest clothing retailer, revealing how a small Irish department store grew to become a high-street behemoth. The programme shows how the company's unique approach to advertising gets it plenty of publicity without a big outlay, and looks at how stores are carefully designed and curated to get customers through the door and spending freely.

Behind the scenes of the department store, revealing how they keep their products so cheap, fool customers with their brand names, and apply all manner of psychological tricks to make people buy more. Contributors include Grace Dent and Harry Wallop, TK Maxx buyers, store managers, consumer writers and super-fans.

What began as an online bookshop rapidly becomes the world's biggest retailer that has its fair share of ethical controversies and manipulations.

The secrets of the online food company's success, travelling with the delivery riders, revealing the meals to avoid and which foods stay hot and which do not. Experts and ex-employees reveal the hidden workings of Deliveroo to help show how online delivery really works, and there is a look at branding and marketing innovations - some of which have got Deliveroo into hot water.

The secrets of the fast-food chain, revealing how its advertising marks it out among its rivals, and how a clever pricing and location strategy give it a unique position in the burger market. The programme also looks at what the future holds as customers become more concerned with issues like food waste, the environment and plant-based diets.

For decades Argos has been a fixture of the Great British High Street - seemingly selling everything, we reveal what really goes on behind the counter at the high street giant.

Industry insiders, retail experts and former employees lift the lid on IKEA. Divulging the secrets of the massive maze-like warehouse shops, tricks they use to get customers to spend, and how the stores are designed to keep people there for hours.

Behind the scenes of the chain of retail stores, Poundland, looking at how its warehouses operate, putting core products to the test and uncovering the secrets of its highest-selling products.

A look inside the high-end designer shopping outlet.