Dunnhumby

Dunnhumby Limited

Type	Private (subsidiary of Tesco)
Industry	Marketing
Headquarters	Hammersmith, United Kingdom
Number of locations	54 offices in 29 countries
Area served	Worldwide
Key people	Simon Hay (CEO 2011–Present)
Products	Tesco Clubcard, among others
Services	Marketing resources, the "Shop"
Revenue	$1 billion - $3 billion
Number of employees	>2,000
Parent	Tesco
Subsidiaries	KSS Retail, BzzAgent, Sociomantic
Website	www.dunnhumby.com

Dunnhumby is a UK-based customer science company.

The company was formed by husband and wife team Edwina Dunn and Clive Humby. Humby was a University of Sheffield trained mathematician, and the couple both worked at Caci. Wanting to start his own business, Humby resigned from Caci, and left on the day that Dunn was dismissed. The couple started Dunnhumby in 1989 in the kitchen of their Chiswick, West London home. The company began working with clients, including Cable & Wireless and BMW.

Dunnhumby originally gained prominence for helping establish Tesco Clubcard. In 1994, Tesco which were second in the UK retail market to Sainsbury's, wanted to create a new loyalty card. The man responsible for Tesco's trials, Grant Harrison, attended a conference where Clive Humby was speaking. Harrison agreed a trial with Tesco's then marketing director Terry Leahy, and after successful trials throughout 1994, the company was asked to present their findings. The first response from the board came from Tesco's then-Chairman Lord MacLaurin, who said "What scares me about this is that you know more about my customers after three months than I know after 30 years."

Tesco originally bought a 53% stake in 2001 for a reported £30m, increasing this to 84% in 2006, before purchasing the rest of the shares. The company is led by global CEO Simon Hay and employs more than 2,000 people in 29 countries, selling information from a 40-terabyte database, to companies including Procter & Gamble, Coca-Cola and US retailer Kroger. Dunn and Humby resigned from the company in October 2010, and remained non-executive directors through early 2013. Dunn and Humby invested in the theatre analytics business Purple Seven in 2013.

KSS Retail, a provider of analytics software and services for retail price optimization and promotions planning, was acquired by Dunnhumby in 2010. Founded in Manchester, UK, KSS Retail operated as a separate business unit until October 2015, when it was rebranded as Dunnhumby Price and Promotion. KSS Retail developed and commercialized optimization software called PriceStrat that helps retailers identify the right prices and promotions as part of a revenue management and merchandising strategy. Through Dunnhumby Price and Promotion, the business also provides business intelligence software that helps retailers with promotions and market basket analytics.