I was referring to the way Health & Safety regulations are applied. Sometimes to the most trivial things and yet what happened this morning can still occur, there have already been issues raised regarding the lighting of the crane (not that I can really say)just what I saw on the TV.

Weather conditions can change extremely quickly.

If the evening news bulletins are to be believed the pilot had asked for, and been given, a diversion.

Those who live down there will know better than I, but I would have thought that the skies above London are controlled airspace, and the aircraft would have been under Air Traffic radar surveillance.

The structure was fully notified in advices to pilots, though since he was on a diversion it probably was not on his briefed route so how come they allowed him in that area?

Since he's no longer around to defend himself, it will doubtless, as usual. be put down to "Pilot Error"

If a helicopter flies over London and crashes into a crane then it wasn't safe.

If the pilot was unfamiliar with the area and the visibility was pretty awful then it's not surprising that he didn't expect an obstruction at 600 feet! After all it is supposed to be, or will be, the highest occupied building in Europe.