Quotes from the news wire:
A colleague out for lunch messaged to say there had been an incident on London Bridge and he was unable to cross back over the river. I went straight to the window and saw hundreds of people running off the bridge down Tooley Street, people looked so panicked. Stevie Beer was haunting. There were at least half a dozen police cars and halted buses. Our building is now on lockdown, but we've not been given any concrete information.