As I posted earlier, none of the recent 5 events are fundamentally the fault of the aircraft, all were the fault of the operating and maintenance culture (latest one aside for the time being of course).
I'd challenge this assertion. The two EC225 ditchings last year were indirectly the result of design flaw in that the pilots were given false indication that the emlub system wasn't working (when in fact it was) after the failure of the rotor shaft.
Had the emlub system been correctly designed (and more importantly tested!!) it's likely both aircraft would have been put down on dry land. The fact there was no loss of life in either of these incidents was primarily down to the fact that sea state was favourable for egress from a ditched aircraft (ie. luck).
Unfamiliar with the UK investigatory process, so am asking if anyone has a guess as to when preliminary data from the recorders will be made public?
The flight recorders have not yet been located.