On 26 October 1992 the London Ambulance Service started to use a new computer-assisted dispatch (CAD) system, known as LASCAD.
[1] Poorly designed and implemented, its introduction led to significant delays in the assigning of ambulances - before the system eventually crashed,[2][3] with anecdotal reports of 11-hour waits.
Media reports at the time claimed that up to 30 people may have died as a result of the chaos, despite a lack of evidence.
The then-chief executive, John Wilby, resigned shortly afterwards.
[4] This failure is often cited in case studies of poor engineering management.