10th November 2008

• Trucost Plc to provide data for Mercer analysis
• First global investment consultancy to offer such a service to clients

Mercer announced today that it can now provide clients with a 'carbon footprint' analysis of their portfolio/s, and compare it to a chosen benchmark, such as the FTSE All-Share, S&P 500 or Russell 1000. This new client offering comes as more institutional investors have expressed an interest in assessing and better managing the risks and opportunities associated with the impact of their investments on the environment and climate change.

"This new tool will allow us to help clients understand the carbon exposure of their equity investments. Acting as an indicator, the carbon footprint and additional analysis will enable our team to work with clients to 'green' their portfolios," said Danyelle Guyatt, principal at Mercer. "In addition, providing this type of information to clients will better equip them to raise climate change issues with their investment managers in a way that is systematic and comparable across managers."

Mercer will develop 'carbon footprint' analyses via use of the Style Research Portfolio Analyzer (SRPA) tool that can now integrate relevant information from Trucost Plc, a leading environmental data provider. A portfolio's "carbon footprint" is a measure of the impact that a company has on the environment in terms of the amount of greenhouse gas emissions produced. Through this unique relationship with Trucost, Mercer is the first global investment consultancy to provide carbon footprint analysis to clients.

"At Mercer we pride ourselves in being the pioneer and market-leader for responsible investment consulting. Adding the 'carbon footprint' capability further extends our comprehensive service offering to clients," said Andrew Kirton, global head of investment consulting, Mercer.

Trucost Chief Executive, Simon Thomas, said: "Our partnership with Mercer means that Trucost's leading database of corporate greenhouse gas emissions is available to a wider audience. It will help trustees better understand overall exposure of their funds to the rising costs of carbon inefficiencies."

"Trustees can encourage fund managers to use carbon footprints to help identify and manage carbon risks and opportunities in existing portfolios, as well as to create carbon-efficient investment products," added Neil McIndoe, Trucost Head of Environmental Finance.

Contacts:

Mercer
Rebecca Dixon
44 (0)20 7178 3144
Mags Andersen / Alistair Peck (press office)
44 (0)20 7178 3513 / 3143 mercer.pressoffice@mercer.com

Trucost
Tom Williams, Brunswick Group
44 207 404 5959
trucost@brunswickgroup.com

Notes to Editors

About Mercer

Mercer is a leading global provider of consulting, outsourcing and investment services. Mercer works with clients to solve their most complex benefit and human capital issues, designing and helping manage health, retirement and other benefits. It is a leader in benefit outsourcing. Mercer's investment services include investment consulting and multi-manager investment management. Mercer's 18,000 employees are based in more than 40 countries. The company is a wholly owned subsidiary of Marsh & McLennan Companies, Inc., which lists its stock (ticker symbol: MMC) on the New York, Chicago and London stock exchanges. For more information, visit www.mercer.com

About Trucost

Trucost Plc is a world-leading environmental research organisation which helps companies and investors understand the environmental impacts of business activities. Trucost provides data and analysis on company emissions and natural resource usage in financial as well as quantity terms to help investors, fund managers and analysts understand how environmental issues could affect companies' future earnings.

Institutional investors use the information to assess the carbon or environmental footprints of their portfolios, to identify differences in performance, to address environmental risks and create structured products with lower carbon or environmental impacts.

Trucost tracks data on the environmental impacts and disclosures of over 4,500 companies and has the world's largest record of greenhouse gas emissions. Coverage includes the FTSE All-Share, S&P 500, Russell 1000, Nikkei 225, DJ STOXX 600, MSCI World Developed, MSCI Europe, MSCI Asia ex-Japan and ASX 200 indices. For further information please visit www.trucost.com