Report from fire brigade says tail landed on roof of St George's Wharf Tower.
Question marks from lots of people about the lights on the crane - can't find any pics online showing lights on it. Sunrise was officially 07.57 with the incident reported at 08.00.
I believe Vauxhall Bridge is a mandatory reporting point on that Heli route.
Report that 'copter was on a weather divert into Battersea heliport, after trying to go from Redhill in Surrey to Elstree in Hertfordshire. It had just left a radio service (doesn't say what kind) from Heathrow, but hadn't yet contacted Battersea.