INTERACTIVE DATA ANNOUNCES READINESS FOR MIFID-RELATED INCREASES IN FINANCIAL INSTRUMENTS AND DATA VOLUME

Optimizes Real-Time Data Collection, Processing and Delivery Systems; Leverages Experience in Managing Massive Data Growth in U.S. Financial Markets

New York and London: 29 October 2007
Interactive Data Corporation (NYSE: IDC), a leading provider of financial market data, analytics and related services, today announced that its Real-Time Services business has implemented a series of initiatives designed to manage the significant growth in the number of financial instruments and in data volume that is expected to result from the implementation of the Markets in Financial Instruments Directive (MiFID) on November 1, 2007.

MiFID, which broadens and strengthens regulation across Europe, includes a series of mandates for pre- and post-trade transparency, including the demonstration of “best trade execution” and trade venue selection.  This will include the reporting of pricing data for over-the-counter (OTC) securities transactions.  As a result, Interactive Data estimates that data volume will continue to increase at a rapid pace and the number of new financial instrument identifiers entering the market could range from the hundreds-of-thousands to the millions, depending on the amount of different currencies in which each security will be available. 

By leveraging experience gained from successfully managing the massive financial data volume growth in the U.S. markets, Interactive Data has identified and eliminated many potential bottlenecks throughout its technology infrastructure.  Interactive Data has also made a number of significant technology enhancements in recent months that are designed to reduce latency and increase data throughput, including implementing a series of new 64-bit dual processing servers, re-architecting key software components to distribute data across multiple processors, and upgrading messaging and optimizing synchronization between ticker plant components.

Interactive Data conducts regular capacity planning reviews of its real-time technology infrastructure, from its Titan Data Distribution Network and state-of-the-art ticker plant, to data processors and routers.  The Company’s technology reviews and enhancements are designed to help ensure that a vast universe of data, including new MiFID-related financial instruments, can be delivered with low latency through PlusFeedSM, Interactive Data’s consolidated digital datafeed.    

To help customers more effectively manage the array of new MiFID-related instruments, Interactive Data plans to introduce new security identifiers that can make critical information, such as the currency of a transaction, more easily accessible to clients.  In addition, Interactive Data has also introduced a wide range of offerings that are designed to help customers comply with MiFID:  http://www.interactivedata.com/rd/mifidofferings/.

“Interactive Data places a strong emphasis on understanding the impact that regulations can have on our customers,” said Mark Hepsworth, president of Interactive Data Real-Time Services.  “It is through this in-depth knowledge and our experience in managing massive amounts of data that we can effectively focus resources across our company to strengthen our technology infrastructure, optimize data collection, processing and delivery, and introduce new services that are designed to help our customers more easily comply with regulations such as MiFID.  Our objective is to mitigate our customers’ data-related challenges, so they can continue to focus their efforts on achieving their business and financial goals.”

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 time-sensitive pricing, evaluations and reference data for more than 3.5 million 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 2,200 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.

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

For further information about Interactive Data please contact:

INTERACTIVE DATA:
Investors

Andrew Kramer
Tel: +1 781-687-8306
Email: andrew.kramer@interactivedata.com

Media

Sue Mitchell (European media)
Tel: +44 (0)20 7825 8076 
Email: sue.mitchell@interactivedata.com

John Coffey (US Media)
Tel:  +1 781-687-8148