NEW YORK, NY--(Marketwire - November 25, 2008) - Ewire -- WSP Group USA has been ranked No. 1 on the authoritative ZweigWhite list of fastest-growing engineering, environmental and architecture firms for 2008. This award reflects the firm's consistent growth and success at outperforming the economy and their competitors to become market leaders.

The annual "Zweig Letter Hot Firm List" is open to all US- and Canada-based firms in the fields of engineering, environmental consulting, architecture and allied disciplines. Rankings are based on a weighted average of each firm's dollar growth and percentage growth from 2004 to 2007. WSP-USA's revenues more than quadrupled in that time, from $46.1 million to over $197 million.

WSP Group USA provides a broad range of speciality services to the energy, environmental, real estate, transportation and infrastructure sectors through four operating units: WSP Flack + Kurtz, WSP Cantor Seinuk, WSP SELLS and WSP Environment & Energy. WSP Group USA is part of WSP Group plc, one of the world's fastest-growing design, engineering and management consultancies employing 10,000 staff in over 100 global locations.

"To be recognized as North America's top 'Hot Firm' is a fantastic tribute to the talent and commitment of our consultants delivering building, civil engineering and environmental projects in the USA," said WSP Group CEO Chris Cole.

"This achievement more than justifies the important step we took in 2008 in completing the rebranding of our US businesses to include the WSP name," said Mr. Cole. "It demonstrates how, by reinforcing our brand in the region, we have been able to extend and enhance our service offerings to clients, both across the USA and internationally."

Firms that make his company's annual Hot Firms list "should be proud," said Mark Zweig, founder of the ZweigWhite management consulting and research firm. "The firms that commit to revenue growth while investing in marketing, information technology, and other infrastructure are usually the most successful in our industry. The hottest firms in the business -- those with consistent growth and success at outperforming the economy and their peers -- are the ones that attract top staff and the best clients."

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