Experian operates globally, describes itself as “Unlocking the power of data to help create a better tomorrow”. Experian developed from credit and consumer reporting to also offer marketing data services. Experian hold and manage marketing data on 700 million people around the world. We are concerned with a number of Experian’s services and products, in particular Experian's Consumer Marketing through Consumer View, which provides “Access to data about circa 51 million individual UK consumers living at residential addresses, with circa 30 million consumers available for prospecting purposes.” The data includes “500+ variables” meaning that individuals identities are linked to demographic, socio-economic and behavioural characteristics. We are also concerned with Experian's Audience Insights and Audience Extension use online and device identifiers so that clients can recognise and target individuals, as well as the use of these products and others by the public sector.