Iona Pennington inherited Muncaster Castle and estate in Cumbria, along with 1,700 acres, 40 tenanted properties, a hotel and two farms. In this programme, she swaps live with self-made Liverpool businesswoman Kate Stewart, who came from a working-class background. Iona begins to understand the joys of new money when she meets Kate's stylist for a personal clothes-shopping session, while Kate starts to see Iona's sense of duty to the financial near bottomless pit of Muncaster.

Dr Rashpal Singh and his wife Kiran own a successful cosmetics clinic and live with their four chidren in a large comfortable property in the suburbs of Middlesbrough. They swap lives for a week with Co Durham single mum Natalee, who survives on just £60 a week after bills and has taken out loans to try to start up her own nail business.