Mary Portas - I Shop Therefore I am

In the 1990s, Harvey Nichols was the most exciting shop in Londin.

Head behind the shop window with the Queen of Shops, as she brings us her memoir of revitalising the moribund department store, at the time more likely to be associated with dowagers than daring fashion designers.

By the end of the decade, "Harvey Nicks" was renowned for its outrageous, traffic-stopping window displays, an era-defining era-defining fashion destination.

She'll describe how she pulled it off, the lessons she learned along the way and what she think the future looks like for the high street.Talking to Tim Hubbard