St George's Hospital also provides care for patients from a larger catchment area in the South East of England, for specialities such as complex pelvic trauma.

Other services treat patients from all over the country, such as family HIV care and bone marrow transplantation for non-cancer diseases.

The old Lanesborough House at Hyde Park Corner was demolished to make way for a new 350 bed facility designed by architect William Wilkins.

This was soon insufficient and led to the creation of a new convalescent hospital, Atkinson Morley's in Wimbledon, freeing up beds at St George's for acute patients.

[11] In 1948, the National Health Service was introduced and plans for a new site for St George's at The Grove and Fountain Fever Hospitals at Tooting were eventually agreed upon.

[15] In April 2010 St George's Healthcare became part of the South West London and Surrey Trauma Network (SWLSTN).

It is one of a small number of A&E departments to benefit from Pearson Lloyd's redesign – 'A Better A&E' – which reduced aggression against hospital staff by 50 per cent.

These include improving its A&E performance against the four-hour waiting time target and putting together a robust operating plan for the next two years.

Mike Bewick wrote a report claiming "inadequate" internal scrutiny of the department; also the surgeons were divided into "two camps" showing "tribal-like activity".

Bewick stated, "In our view the whole team shares responsibility for the failure to significantly improve professional relationships and to a degree surgical mortality."