Disaster response is a phase of the disaster management cycle. Its preceding cycles aim to reduce the need for a disaster response, or to avoid it altogether.
The organisation in the United Kingdom for the provision of communcations disaster response is RAYNET[1]. The UK organisation for the provision of disaster response by Off-road vehicles is the 4x4 Response Network.
A great deal of assistance in the wake of any disaster comes from various charities, and non-governmental organisations. See: