July 3rd, 2009 at Hyde Park in London.
Parlophone has their own version of the interview on YouTube:
I have to say, it's a really great site to see all four of these guys back together. But it's especially great to see Graham Coxon back with the group (after his departure during the recording of 2003's Think Tank). As to what this means for Coxon's seventh solo record is unknown, but perhaps being dropped from his label had something to do with his willingness to reunite.
Be sure to check out NME's Blur page for the latest news on the band, as there are plenty of written articles on the event.