The Royal London Hospital is part of a citywide initiative to transform London's emergency and trauma services. In 2010, the London Trauma System was implemented. The network is believed to be the largest of its kind in the world. The System comprises four existing London hospitals, the Royal London Hospital (Whitechapel), King's College Hospital (Denmark Hill), St George's Hospital (Tooting) and St Mary's Hospital (Paddington), supported by a number of trauma units located in various A&E departments where patients with less serious injuries receive treatment.