Rail Accident Investigation Branch

The Rail Accident Investigation Branch  (RAIB) is the independent railway accident investigation organisation for the UK. It investigates railway accidents and incidents on the UK's railways to improve safety.

RAIB is concerned with the investigation of accidents and incidents on:

• national railway networks in Great Britain and Northern Ireland;
• the Channel Tunnel rail network (in co-operation with its equivalent operation in France);
• London and Glasgow Underground systems and other metro systems;
• light rail and tramways;
• minor and heritage railways (including narrow-gauge systems over 350mm gauge); and
• cable-hauled systems of 1km or longer.

How does RAIB conduct investigations?

RAIB carries out investigations into rail accidents and incidents with a view to enabling lessons to be learned. Their remit covers improvements in safety on railways, and the prevention of similar accidents and incidents.

RAIB’s investigations are independent and have a focus on safety improvement.  RAIB make recommendations which we consider and pass on to relevant dutyholders, who are required to take them into consideration and act on them appropriately.

Last updated: 23 September 2008

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