The document provides information about WSP, a global professional services consulting firm formed through the merger of WSP Group PLC and Genivar. It discusses WSP's expertise and experience in various areas of transportation and infrastructure, including rail projects. Specifically, it summarizes WSP's role in consulting services for the Stockholm City Line project, a major underground rail tunnel project in Stockholm, Sweden. WSP provided pre-feasibility studies, feasibility studies, preliminary and detailed design work for the complex project through a partnering approach with the client and contractor.