Vladyslav Dryhval, 46, pleaded not guilty to three counts of possession of a bladed article, including one axe and two knives.
Dryhval, of Leyton in east London, spoke through a Russian-language interpreter to enter his plea at Southwark Crown Court on Thursday afternoon.
The charges relate to an incident on the evening of April 13, four days after the Duke of Edinburgh’s death, during which Dryhval was detained on the Mall in central London.
Armed officers on patrol made an arrest after being alerted to reports of a man carrying an axe made by members of the public to private security guards.
Pictures posted on Twitter by witnesses appeared to show officers surrounding a suspect near the Institute of Contemporary Arts.
Traffic was blocked off in both directions while the incident was dealt with.
The Metropolitan Police said in the aftermath there were no reports of any injuries and the incident was not treated as terror-related.
Dryhval was remanded in custody until his trial in November this year.
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