JESIP: Why Multi-Agency Interoperability Matters for Emergency Response

When seconds count and lives are at stake, emergency services can't afford to work in silos. The Joint Emergency Services Interoperability Principles (JESIP) was established in 2012. This followed a report submitted to the Home Secretary, aiming to ensure the blue light services are trained to work together as effectively as possible. This applies to all levels of command in response to major or complex incidents.

For law enforcement, fire and rescue, and ambulance services across the UK, JESIP has become the standard framework for joint working. But what exactly is JESIP, and why does it matter to frontline responders?

The Problem JESIP Was Created to Solve

Reviews following major incidents such as the July 2005 London bombings, the wide-area floods across the UK in 2014, and the shooting of 12 people in Cumbria by Derrick Bird in 2010, all reported gaps and failings in the interoperability between the services.

Post-incident inquiries and reports have highlighted persistent challenges that the emergency services face during multi-agency responses. Without agreed-upon terms of engagement and shared frameworks, bringing together different services with their own competencies, systems, and terminology becomes incredibly difficult.

What is JESIP?

Interoperability in the emergency services refers to the way in which responders from different organisations can work together coherently as a matter of routine. JESIP provides the standardised principles and practical tools to make this happen.

JESIP formally ended as a programme in September 2014 and moved into a period of consolidation. In April 2015, it was renamed as the Joint Emergency Services Interoperability Principles, shifting from a temporary programme to an embedded way of working.

The Five Core Principles of JESIP

There are five principles of JESIP: co-locate, communicate, coordinate, jointly understand risk, and shared situational awareness.

1. Co-locate
   A first priority for commanders is to agree on a single, secure and easily identifiable location, as close as possible to the incident scene, where they can safely meet. If for any reason commanders are unable to be in the same physical location, then a reliable means of radio communication will need to be established as soon as possible.
   Co-location isn't just about being in the same place – it's about creating the conditions for direct communication and joint decision-making when it matters most.
2. Communicate
   It is important to avoid the use of any form of language that could cause confusion or delay, such as the use of complex terminology, service-specific jargon, abbreviations or acronyms.
   Clear communication between control rooms and responders is essential for building shared understanding from the very first moments of an incident. Communication links start from the time of the first call or contact, instigating communication between control rooms as soon as possible to start the process of sharing information.
3. Coordinate
   Coordination involves control rooms and responders of all levels, be they on scene or at a Tactical or Strategic Coordinating Group, discussing the available resources and activities of each responder organisation, agreeing priorities and making joint decisions throughout the incident. Coordination underpins joint working by avoiding potential conflicts, preventing duplication of effort and minimising risk.
   Incident commanders must agree the lead service, identify priorities, resources and capabilities and agree the timings for future meetings.
4. Jointly Understand Risk
   Each organisation should carry out their own risk assessments, then share the results so that they can plan control measures and contingencies together more effectively.
   Understanding risks enables responders to answer three fundamental questions: what is happening, what does it mean, and what might happen next?
5. Shared Situational Awareness
   Shared situational awareness is a common understanding of the circumstances, immediate consequences and wider implications of an incident.
   Responders should work together to build shared situational awareness. This requires continuous effort. The situation and responders' understanding will change over time.

Essential JESIP Tools

M/ETHANE

The METHANE model:

• Major incident declared
• Exact location
• Type of incident
• Hazards
• Access
• Number/type of casualties
• Emergency services present/required

is a highly recommended method for passing information consistently between all services and control rooms.

This standardised reporting format ensures that critical information is communicated clearly and completely, regardless of which service is passing the message.

Joint Decision Model (JDM)

The Joint Decision Model was developed to help responding agencies make effective decisions during fluid circumstances. When using the joint decision model, the first priority is to gather and assess information.

All joint decisions, and the rationale behind them, should be recorded in a 'joint decision log'.

Why Proper JESIP Documentation Matters

In the heat of a major incident, decisions are made rapidly under pressure. Documenting these decisions isn't just good practice – it's essential for legal accountability, post-incident review, and organisational learning.

This is where specialist equipment plays a crucial role. Universities, NHS trusts, police forces, and the MOD all rely on incident log books. With tamper-evident IDs and embedded NFC chips, exclusive JESIP versions are designed for accuracy, traceability, and legal integrity.

JESIP-Compliant Log Books

At Niton, we supply JESIP-specific log books designed to support structured decision-making and meet JESIP standards:

JESIP On-Call Log Book (OCLB1) 

The A5 format on-call log book provides a practical solution for recording key information during on-call periods and initial incident response phases.

JESIP Incident Log Book Version 5 (ILB5)

Designed specifically for major incidents. This log book supports commanders in maintaining accurate, legally defensible records of decisions, actions, and communications throughout an incident.

These log books, support structured decision-making and aid in meeting JESIP standards, are intended for live response, planning, or training.

Making JESIP Work in Practice

Regular training includes that mandated through JESIP, which is enacted in partnership with colleagues from police, fire and rescue and other responding agencies under the banner of 'Working together – Saving lives – Reducing harm'. Joint working promotes:

• wider understanding of the roles of each agency
• a greater awareness of shared risks
• a systematic approach to the effective
• joint management of incidents.

The principles aren't just for major incidents. While the initial aim of JESIP was to improve emergency response to major incidents, it has also proven itself to be a scalable model. The five joint working principles can be applied in virtually any type of multi-agency incident.

JESIP: The Reality on the Ground

While JESIP provides an excellent framework, it's important to acknowledge that challenges remain. The Manchester Arena Inquiry, which evaluated the emergency response to the 2017 terrorist attack criticised JESIP. The inquiry argued that JESIP was not embedded into the "muscle memory" of responders. This meant that under stress, joint principles were abandonded and people operated in silos.

This underscores a crucial point: JESIP is only as effective as its implementation. Regular training, realistic exercises, and the right equipment are essential. This ensures when pressure mounts, joint workin is second nature rather than an afterthought.

Key Takeaways for Responders

Know the five principles –

1. Co-locate
2. Communicate
3. Coordinate
4. Jointly understand risk
5. Maintain shared situational awareness

Use M/ETHANE – Standardised communication saves time and prevents misunderstanding

Document decisions – Use proper log books to maintain legally defensible records

Train regularly – Multi-agency exercises embed JESIP into routine practice

Think beyond major incidents – JESIP principles apply to any multi-agency response

Further Resources

For more information about JESIP principles, training materials, and guidance, visit the official JESIP website at www.jesip.org.uk.

Effective interoperability doesn't happen by accident. It requires shared frameworks, clear communication, and the right tools to support decision-making under pressure. By understanding and applying JESIP principles, emergency responders across all services can work together more effectively to save lives and reduce harm.