For his part, Hayward has been neither convincing nor all that unconvincing. His demeanour is suitably contrite, but his answers have been too evasive to count. Not that the BP chief exec can really do much anyway. Against a backdrop of one of the biggest ecological – and, increasingly, corporate – disasters of all time, it's more a matter of when, not if, he loses his job. In the meantime, he is now, rightly or wrongly, the frontman of this particular tragedy – a tragedy in which so very few of the players are doing themselves any credit.