British police: "Mumbai is coming to London"

The detective said companies should anticipate a shooting and hostage-taking raid “involving a small number of gunmen with handguns and improvised explosive devices”.

The warning — the bluntest issued by police — has underlined an assessment that a terrorist cell may be preparing an attack on London early next year…

Officials now report an increase in “intelligence chatter” — communications captured by electronic eavesdropping agencies. One senior security adviser said the police warnings had intensified and become much more specific in the past fortnight.

“Before, there has been speculation. Now we are getting what appears to be a definite plot to carry out a firearms attack on London,” he said.