Waterspout!

'Approximately 160 waterspouts are currently reported per year across Europe, with the Netherlands reporting the most at 60, followed by Spain and Italy at 25, and the United Kingdom at 15. They are most common in late summer. In the Northern Hemisphere, September has been pinpointed as the prime month of formation'
https://en.wikipedia.org/wiki/Waterspout


Therefore probably a third of the UK's yearly waterspouts dropped out of the bottom of a huge cloud offshore of Great Yarmouth this morning... 

A couple of them looked far more dramatic - but had died away by the time I got the camera.