JESIP (Joint Emergency Services Interoperability Principles) is a UK initiative focused on helping emergency responder organisations work together effectively to save lives. Its models and principles are established as the standard for interoperability in the UK. The JESIP Joint Doctrine provides a shared framework for multi-agency working, with guidance for use during incidents and recovery.

JESIP offers practical resources to support joint responses, including principles for joint working, the M/ETHANE approach to sharing incident information, and the Joint Decision Model for making coordinated decisions. Its materials include accessible doctrine, guidance, templates, briefings, and aide-memoires. Training and awareness products, including e-learning and interoperability leadership training, help organisations prepare their staff. JESIP also provides support for testing and exercising, joint organisational learning, and reviewing lessons from incidents.

The JESIP app gives users access to key principles and decision-making guidance, and can be used to create a M/ETHANE report. Through its doctrine, training, tools, and learning resources, JESIP supports responders in building shared understanding and coordinating their work.