whisky-dave formulated on Monday :
Anyone have any idea what sort of voltage etc. this might have been.

That looks more like the result of a near strike than a direct
on.Almost a couple of decades ago our local church tower (stone built)
100 yards away was struck, it did considerable damage inside the church
tower.

The resulting pulse, at around 2 in the morning, blew my large sat
system, a video and several other items. It either the pulse or the
noise, lifted me off the bed. It also took many phone lines out in the
village.

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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk