Mary Portas: Secret Shopper

The retail guru works with four businesses to help improve the quality of their customer service. At a family-run convenience store in Burnham, Buckinghamshire, she's shocked to see how staff behave when they don't know they're being filmed. Too much clowning around means out-of-date food is being left on the shelves, so Mary takes supervisor Dean and his team to a Michelin-starred restaurant to show them how to work well together. She also wants owner Keshu to rethink the products he stocks and give his savvy daughter Ash more responsibility.

The retail guru heads to the Suffolk seaside town of Lowestoft to take on her biggest challenge yet. She's working with Godfreys, a family-run department store that customers are deserting, resulting in a dire financial situation. Owner Jim has shared management duties between his stepchildren Laura and David, but with a massive overdraft, the store's future is in doubt. Determined to turn the staff into product-knowledge experts, Mary organises a trip to Spitalfields Market and devises a customer-service test in an attempt to give the team the confidence they need.

Mary Portas heads to south-east London, and London Fashion Week, to help Gemma get her struggling clothes boutique Diosa back on track selling urban fashion to young women

Mary takes on a struggling car dealership in Aylesbury, urging the blokes who run it to undergo a culture change to appeal equally to women and men

In the first episode of the third series, Mary takes on a struggling bridal boutique in Surrey. The married owners are fighting for survival, with mounting debts and piles of unsold stock. Mary is in for a big surprise when she meets the team, but can she bring in enough brides to turn things around?

Retail expert Mary Portas continues her mission to banish bad customer service from the high street. This time she takes on a hair salon in Kent, Shobie and Co, where staff are at war with the owners and swearing on the shop floor is driving customers away. Can Mary unite the team and save their business?

Retail expert Mary Portas continues her mission to banish bad customer service from the high street. This time, she visits City Hardware, a family-run DIY store in the heart of London. The shop is stuck in the 1960s and Mary is in for a shock when she uncovers their attitude to customers. Can she persuade this male dominated world to embrace the 21st century?

Mary wants to turn around the fortunes of The 157 Store, a menswear outlet near Portsmouth that's struggling to attract customers and keep them happy