The Transforming Surge Capacity Project (TSC Project) was launched by the Start Network in January 2015 as one of 14 projects under the UK Department for International Development’s (DfID) three-year Disasters and Emergencies Preparedness Programme (DEPP). The project sought to improve surge capacity across the sector by increasing the capacity of surge personnel; piloting joint rosters to improve organisational surge capacity; and building evidence for collaborative and localised surge approaches. The consortium of 11 UK-based humanitarian agencies and two technical partners1 worked through two national platforms in Pakistan and the Philippines; an Asian regional platform based in Bangkok, Thailand; and a global platform in London, UK.