The incident involving Katherine Blair is being linked with another attempted robbery nearby half-an-hour earlier. Met Police say: "On both occasions a firearm was seen but not used - no shots were fired. "None of the victims were injured and nothing was stolen during the incidents."
The first incident happened in Boston Place at 8pm involving a female victim and a male suspect.
The man who disrupted the Leveson inquiry to accuse former prime-minister Tony Blair of war crimes will appear on LBC Radio this morning. David Wakelin stormed the court room after managing to evade security.
After his stunt stopped proceedings yesterday he said getting access to the inquiry was surprisingly easy.
Tony Blair's evidence to the Leveson Inquiry was interrupted today when a protester burst in and yelled "this man should be arrested for war crimes".
The man, who somehow managed to evade security, was swiftly removed from the court room after causing the disturbance. Lord Justice Leveson has ordered an immediate inquiry into how he got in to the Royal Courts of Justice.