Imperial College Healthcare trust, the UK's first academic health science centre, was launched on Monday.

Professor Stephen Smith, principal of the faculty of medicine of Imperial College London, has been appointed chief executive and principal of the trust.

The merger of Hammersmith Hospitals trust and St Mary's trust with Imperial College London will create the largest NHS trust, with an annual turnover of£760m and 9,700 staff. Lord Tugendhat has been appointed chair of the organisation.