The Cash Learning Partnership (CaLP) originated in the Overseas Development Institute Humanitarian Policy Group Tsunami Cash Learning Project, convened in 2005 after the 2004 Indian Ocean earthquake and tsunami and involving five humanitarian organisations - the British Red Cross Society, Concern Worldwide, Mercy Corps, Oxfam GB, and Save the Children UK - interested in sharing lessons arising out of the use of cash support in the Tsunami's aftermath and with a view to supporting capacity building and developing training material; conducting research and gathering evidence; and advocating for coordination, contingency planning, and preparedness to encourage the appropriate use of CVA.