Word, from as close to the horses mouth as I can get, is that the engine stopped three minutes after a total refuel at an East Anglian licensed airfield. Substantial quantities of water have been found in the tank.
The e/o landing seems to have been textbook straight if just a tadd too fast for the boggy conditions. Skid dug in and the machine rolled over. Not much wind that day. I doubt I could have done better