The under-fire NHS boss who says he is "absolutely determined" to say in his job is due to make a speech on the state of the NHS today.
Sir David Nicholson is expected on stage at 11am at the Innovation Expo 2013 in London.
Nicholson has faced calls to resign for his role in the failures during the Stafford Hospital scandal.
More top news
The royal couple have been in the US to mark the 300th anniversary of the foundings of New Orleans and San Antonio.
A small number of people were treated at Southgate Tube station, British Transport Police said.
Police and coastguard discovered the bodies of 42-year-old Cheryl Tompsett and her five-year-old son Leo Tompsett on Monday.