Chris Matthison was near to the crash site.
I heard a very unusual dull thud, then there was silence. The silence really took my imagination. Emergency services responded very quickly.
There was some damage to the crane. It's possible the crane is lying across Nine Elms road. The top of the nearest building is steeped in mist and difficult to see.
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Late sunshine here and there this evening - but more cloud for southern Scotland, northern England and Northern Ireland again.