Interactive Data Develops New CFD Research Portal For City Index

New web application and tools designed to help CFD traders

London, March 12, 2008 – Interactive Data Corporation (NYSE: IDC), a leading provider of financial market data, analytics and related services, today announced that its Managed Solutions business has developed a new research portal for City Index Group Ltd ('City Index'), a leading London-based provider of retail derivative trading services including contracts for difference (CFDs), foreign exchange and spread betting.

Interactive Data Managed Solutions has designed and developed web-based applications and tools to help enable City Index clients research the financial markets and make investment decisions. Underlying data across multiple asset classes for the portal has also been provided by Interactive Data's businesses. Interactive Data has customised - and is also hosting and operating - the portal on behalf of City Index.

Alexis Webster, commercial development director of City Index, said: "We are delighted with the new portal developed by Interactive Data. We provide access to thousands of instruments on the world's financial markets through our real-time trading platforms. These newly-developed trading support tools - along with investor research and education - are designed to help our clients react swiftly to market movements and make informed trading decisions."

David Hann, general manager, EMEA, Interactive Data Real-Time Services, added: "We are very pleased to have worked with City Index on this project. We successfully designed and developed the new portal in a very short timeframe, and have integrated data covering numerous asset classes. The portal is designed to enable City Index clients to research and view underlying information to CFDs needed for their trading activities."

A CFD, a type of financial derivative, is an agreement between a client and a provider to exchange the difference between the opening and closing value of a contract.

About City Index Group

City Index is a leading provider of CFD, foreign exchange, options and, in the UK, spread betting services. The Group trades primarily under the City Index, Finspreads and IFX brands and also provides a fully outsourced white label solution to numerous partners.

In September 2006, City Index acquired IFX Group plc ('IFX'), the London-based international business which provides institutional and retail clients with a range of innovative leveraged financial products, principally in the foreign exchange and global equity markets.

City Index was established in 1983. Its ultimate parent company is IPGL, a private holding company whose other interests include an indirect shareholding of approximately 20 per cent in ICAP plc, the FTSE 100 listed interdealer broker with a market capitalisation of approximately £4.3 billion.

For more information about City Index, please visit www.cityindex.com.

About Interactive Data Corporation

Interactive Data Corporation (NYSE: IDC) is a leading global provider of financial market data, analytics and related services to financial institutions, active traders and individual investors. The Company's businesses supply real-time market data, time-sensitive pricing, evaluations and reference data for millions of securities traded around the world, including hard-to-value instruments. Many of the world's best-known financial service and software companies subscribe to the Company's services in support of their trading, analysis, portfolio management and valuation activities. Through its businesses, Interactive Data Pricing and Reference Data, Interactive Data Real-Time Services, Interactive Data Fixed Income Analytics, and eSignal, the Company has approximately 2,300 employees in offices located throughout North America, Europe, Asia and Australia. The Company is headquartered in Bedford, Mass. Pearson plc (NYSE: PSO; LSE: PSON), an international media company, whose businesses include the Financial Times Group, Pearson Education, and the Penguin Group, is Interactive Data Corporation's majority stockholder.

Interactive Data Managed Solutions is a leading provider and operator of customised financial information systems. The group builds and manages Web-based financial market data portals and terminals for a range of organisations worldwide, from retail and investment banks to asset managers, online brokers, stock exchanges and media portals. By aggregating a broad set of financial data and client-proprietary content and offering visually stunning features such as charts, sophisticated search functions, decision-support tools and analytics, these intuitive applications can help customers optimise their business processes and realise efficiencies. Interactive Data Managed Solutions is managed as part of the Interactive Data Real-Time Services business, which provides a comprehensive suite of offerings that includes PlusFeedSM, a consolidated, low latency datafeed.

For more information about Interactive Data Corporation and its businesses, please visit www.interactivedata.com.

Interactive Data^SM and the Interactive Data logo are service marks of Interactive Data Corporation.