The Loss and Damage Collaboration’s Santiago Network for Loss and Damage (SNLD) Working Group recently circulated a Short Brief for Civil Society on the SNLD. This paper is intended to provide further detail to that paper to support the effective operationalisation of the SNLD at COP26. This longer brief also builds upon the Loss and Damage Collaboration’s Santiago Network Report; the Joint Constituency Call for Action; Practical Action’s report on the lessons learned from the CTCN and notes from the informal consultations led by the Chilean COP25 and UK COP26 presidencies and work of the SNLD working group.