The network is believed to be the largest of its kind in the world
A new system of trauma centres for seriously ill patients in the capital has officially opened in the city.
The system is made up of three trauma networks each with a major trauma centre for treating the most seriously injured patients.
The centres are being run from three hospitals - east London's Royal London, central London's King's College and St George's, in south London.
The network is believed to be the largest of its kind in the world.
Alongside the major trauma centres are a number of local trauma units for treating people with less serious injuries.
"Evidence shows that dedicated major trauma centres with expert teams of professionals can save more lives," said Dr Fionna Moore, clinical director for trauma in London.
"Plans to develop a trauma system for London were based on evidence which showed that many trauma patients in London and across the UK receive poor care."
A fourth centre is due to open in north-west London in October.