TradeWeb Goes Live with First Multi-Dealer-to-Client Convertible Bond Marketplace

JERSEY CITY, NJ (May 9, 2007) - Thomson TradeWeb, the leading online marketplace for Fixed Income and Derivatives, and a unit of The Thomson Corporation (NYSE: TOC; TSX: TOC), today announced that it has gone live with its new dealer-to-customer online market for U.S. Dollar-denominated convertible bonds. Working closely with four of the major convertible bond dealers and a core group of leading buy-side institutions, TradeWeb has built a unique marketplace that provides convertibles professionals with premier market data, efficient access to dealer inventory, and unparalleled straight-through processing.

TradeWeb's new convertible bonds market allows users to:

Directly access commingled inventory from the world's leading dealers;

Tap into real-time dollar-neutral pricing;

Capture all their convertible bond trading needs on one, integrated platform

TradeWeb's convertible bonds marketplace is the firm's 17th online fixed-income market and increases its presence in the online Credit markets, which already includes U.S. Corporates, Credit Default Swaps and European Credit.

"Convertible bond clients can now benefit from fast and efficient access to deep dealer liquidity, while significantly lowering their operational risk and costs. We have partnered with a world-class group of dealers to create a business which benefits all parties. It really is a win-win opportunity for the convertible bond market," said Billy Hult, Managing Director and Head of U.S. Markets at Thomson TradeWeb.

TradeWeb launches its convertible bonds marketplace with the strong support of four major convertibles dealers: Citigroup, Lehman Brothers, Merrill Lynch and UBS.

"By helping to enhance our distribution capabilities and providing convenience and efficiencies to our customers, TradeWeb has built a solution that we fully support and expect to be very successful," said JC del Real, Managing Director, US Convertibles Trading at Citi.

"We are strong supporters of the move to online convertible bond trading. As the leading online bond and derivatives marketplace, TradeWeb was the obvious choice of partner as we work to make this a success for both clients and dealers," said Richard Gatward, Managing Director, Head of US convertibles at Lehman Brothers.

"UBS is pleased to support TradeWeb on this online convertible market, which will provide benefits for dealers and clients alike from a more streamlined, efficient trading workflow," said John DiBacco, Managing Director, Head of Convertible Bond Trading at UBS.

About Thomson TradeWeb

TradeWeb is the leading online fixed-income trading network with over 11 million trades executed and total volume surpassing $175 trillion since its inception in 1998. TradeWeb's multi-dealer auction model links the trading desks of 35 of the world's leading Fixed-Income dealers with more than 2,200 buy-side institutions in North America, Europe, and Asia. Over $200 billion in trading volume gets executed over TradeWeb each day.

The business is also the leading electronic "straight-through processing" network for the fixed-income markets, providing dealers and buy-side institutions with paperless trade allocations and confirmations on its fully-integrated TradeXpress network. TradeWeb's STP network also includes AccountNet, the first derivatives counterparty management tool and the leading data warehouse for standing settlement instructions and OTC derivatives legal documentation.

Thomson TradeWeb operates within the Thomson Financial group of businesses. TradeWeb LLC is a member of the NASD. TradeWeb Europe Limited is regulated by the U.K. Financial Services Authority.

About Thomson Financial

Thomson Financial, with 2006 revenues of US$2 billion, is a provider of information and technology solutions to the worldwide financial community. Through the widest range of products and services in the industry, Thomson Financial helps clients in more than 70 countries make better decisions, be more productive and achieve superior results. Thomson Financial is part of The Thomson Corporation (www.thomson.com), a global leader in providing essential electronic workflow solutions to business and professional customers. With operational headquarters in Stamford, Conn., Thomson provides value-added information, software tools and applications to professionals in the fields of law, tax, accounting, financial services, scientific research and healthcare. The Corporation's common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).