This is good to see: we're very used to seeing New York blown up by aliens (yawn) but less so London. It puts volcanic ash clouds in perspective, anyway. And a great if unlikely soundtrack.
It's part of a campaign to bring the World Science Fiction Convention to London in 2014, an objective that seems both worthy and fun and which we (OK, I) at Ragbag support wholeheartedly (that should swing it).
But 2014, eh? For someone who grew up watching Space 1999 that sounds an impossibly long time into the future. We will surely be living on other planets by then and travelling by jetpack (volcanic dust permitting, of course).
H/t Urban 75.