Story highlights Mayor: "It is important we are prepared should the unthinkable happen"

Threat level remains same, but authorities point to recent attacks across Europe

London (CNN) London will increase its presence of armed police following the recent terror attacks across Europe, authorities announced.

As part of a new anti-terrorism operation, 600 additional armed officers will be present in highly visible locations across the UK capital to protect against the threat of attacks.

Police Commissioner Bernard Hogan-Howe and London Mayor Sadiq Khan.

In a statement, Metropolitan Police Commissioner Bernard Hogan-Howe said: "Anyone who's been following events in Europe over the past few weeks will understand why we want to show our determination to protect the public."

He said authorities were "deadly serious" about protecting the people of London and that the armed officers were there to reassure and help the public against any attackers.

"Our firearms officers are the ones who will run toward the danger," he said.