The 61-year-old flamboyant businessman, already out on bail on an extradition warrant executed by the Metropolitan Police earlier this year, was released on the same bail conditions as before to appear for his trial on December 4.
UK's Crown Prosecution Service will be arguing the case against Mallya on behalf of the Indian government.
Ahmed Hassan, believed to be of Middle Eastern origin, was named by Scotland Yard as officers produced him before Westminster Magistrates' Court.
The taxi-hailing company said it will challenge the decision, which shows the world that "far from being open, London is closed to innovative companies".
The total number of arrests in the case has increased to six.
Scotland Yard's Counter-Terrorism Command investigating the attack arrested the 25-year-old from Newport.
Earlier, an 18-year-old man was arrested in the port area of Dover. None of the suspects have been named.
The incident took place at the Parsons Green station, which has been closed.
"I never think it's helpful for anybody to speculate on what is an ongoing investigation," May said.
Flowers, posters and images were placed at the gates of Kensington Palace.
Scotland Yard has launched an investigation after a 26-year-old man stopped his car and then wielded a large knife.
Laila Rouass, 46, who was on a holiday in the city with her 10-year-old daughter Inez Khan, live tweeted from her hideout as the attack unfolded in the busy Las Ramblas area of the city.
Sentencing the men, Justice Globe said the men had been gripped by a "long-standing, radical, violent ideology".
While his official diary of engagements come to an end on Wednesday, the Palace has said the Duke may still decide to attend some events alongside the Queen.
All the three, aged between 25 and 33 are believed to be of Pakistani origin
The next hearing to assess the progress in the case will be held at Westminster Magistrates' Court on September 14.
The liquor baron showed up despite being exempt from appearing by the judge at the last hearing on June 13.
The rally was being planned by UK-based Kashmiri groups to mark the first death anniversary of the commander of the Hizbul Mujahideen terrorist outfit killed in a gun battle with Indian armed forces in the Kashmir Valley on July 8 last year.
A rare sketch by John Henry Amshewitz and correspondence to Sarat Chandra Bose will go under the hammer at a Sotheby's auction on July 11.
The MPs voted in favour of the Queen's Speech by 323 votes to 309 with a majority of 14.