Experian plc, formerly known as CCN Systems, is a global information services group with operations in 41 countries. The company employs 15,500 people with corporate headquarters in Dublin, Ireland and operational headquarters in Nottingham, England, Costa Mesa, California, US and São Paulo, Brazil. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.

The Company was founded by John Peace in 1980 in Nottingham as CCN systems, an information services business owned by GUS plc.

In 1996 GUS plc acquired the US credit reporting business Experian, formerly known as TRW Information Services, from Bain Capital and the Thomas H. Lee Partners. GUS combined Experian with CCN. GUS retained the Experian name for its combined credit services subsidiary.

In 2004 Experian acquired CheetahMail, a business founded in 1998 that provided e-mail marketing software and services. In the same year Experian also acquired QAS, a supplier of contact data management and identity verification solutions.