Wardell Armstrong International Ltd (formerly CSMA Consultants Ltd) is an energy and earth resources consultancy company that provides specialist consultancy services to the mining, minerals, renewable energy and environmental industries. Wardell Armstrong International (WAI) is part of the Wardell Armstrong LLP.

WAI is composed of three operational groups, each focusing on these different industries:

• The Environmental Services Group
• The Mining and Minerals Group
• The Renewable Energy Group

Wardell Armstrong International can supply expert witness services to assist in the resolution of disputes.