Mary Portas surveys Britain's spending habits over the past 12 months, revealing customers' passions, fashions, fads and faux pas during 2018. Throughout the programme, Mary goes inside a £2billion delivery company to find out how the UK became a takeaway nation, and sees how some of the biggest high street names and companies are attempting to be more ethical and cut down on their use of plastic. She also finds out how veganism went from marginal to mainstream and how companies have responded to consumers' changing habits.