The Prime Minister said an advisory board of former defence secretaries, chiefs of staff and military specialists would bring together ideas for nationwide commemorations of the Great War.
He told an audience at the Imperial War Museum that his ambition was to have a "commemoration that captures our national spirit in every corner of the country".
"A commemoration that, like the Diamond Jubilee celebrations this year, says something about who are as a people," he continued.
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Detectives in Westminster are investigating after the man was discovered on the Route 189 bus in Marylebone shortly after midnight.
The murderer was shaking and appeared to be gasping for air for around 13 minutes before dying.
The positive results come after Chancellor Philip Hammond admitted the government is prepared to sell its stake at a loss to the taxpayer.