London-based citizen journalism start-up Blottr, which destealthed towards the end of February with a Techrunch write-up and recently announced a round of angel funding, led the news agenda for much of Monday by breaking the day's major UK news story.
First publishing a few minutes after 10am, Blottr broke the news of a bomb alert in London and over the day added pictures, detail and coverage of the events in the square and the controlled explosion carried out in Trafalgar Square around 9am. Sky and the BBC picked up the story around 3 hours later, and Blottr founder Adam Baker told virtualeconomics:
"It was the only full story available of the incident for 3 hours, until Sky News put it as their "breaking" news, followed by the BBC. By this time, everyone discussing the story on Twitter (was) linking to our story, as the main source."