Darren is doing a direct bag jump and the bag holder dropped the bag. The resulting 180 deployment put Darren into the building. He is jumping a sponsored canopy and carrying a box of Milk Tray chocolates in an attempt to emulate an advert running at the time where a mysterious bloke did extreme things to deliver the chocolates.

UPDATE FROM BASE#229 BELOW
The jump was from a hotel in London (300'). Darren He went without his mentor and took along with him some DZ friends to watch. Method of deployment was Pilot Chute Assist. Using a modified Pursuit 230 in a sky diving rig which had been loaned to him. He exited very head down with the canopy deploying between his legs and opening 180 and surging into the building front. The canopy surged and stalled repeatedly, from studying the video post jump Darren was probably unconscious or killed on the first impact and was declared dead on the scene. He had been advised a number of times to sort his exits out as his previous 3 jumps were all head down . Jumping this Hotel was for the more experienced.
He was 25 years old

Video of the jump:
http://www.youtube.com/watch?v=veeGqZ8jYF0