Sainsbury’s boss defends decision to sell customers’ Nectar card data

Supermarket says it protects personal data incredibly carefully' and move makes ads more relevant'

The chief executive of Sainsbury's has defended its decision to sell data on the shopping habits of his customers to TV and consumer goods manufacturers looking to target their advertising.

Simon Roberts has said the supermarket group protects personal data incredibly carefully" and that its strategy had made adverts more relevant" for shoppers.