This national event is conducted annually and targeted to employees, and their employers.
Although not officially a state funeral, as accorded to Sir Winston Churchill, the event was conducted with a level of pomp and ceremony not witnessed in London since the death of the Queen Mother in 2002.
"I have said in the past and I'll continue to say it: I have issues with the way the event was conducted," the chief said.
"I have said in the past, and I'll continue to say it: I have issue with the way the event was conducted," Beck said.
"Under the clear presumption that a war crime has been committed, MSF demands that a full and transparent investigation into the event be conducted by an independent international body," MSF general director Christopher Stokes said.
MSF issued a statement on Sunday demanding "a full and transparent investigation into the event be conducted by an independent international body," saying "an internal investigation by a party to the conflict would be wholly insufficient".
"I have said in the past, and I'll continue to say it: I have issues with the way the event was conducted," Beck said, according to the Times.
"Under the clear presumption that a war crime has been committed, MSF demands that a full and transparent investigation into the event be conducted by an independent international body," Stokes said.
The event was conducted under the Chatham House rule, which allows comments to be reported without attribution to encourage a frank debate.
The event was conducted in the manner of a coroner's inquest before presiding jurists John Dowd and Keith Suter, with former NSW director of public prosecutions Nick Cowdery as counsel assisting.
