Observer: Washington, 5am, Tuesday: a tired Tony Hayward, chief executive of BP, was finally patched on to the conference call. At the other end, a dozen journalists sat around a boardroom table at its plush headquarters in St James’s Square, London and leant in towards the squawkbox. BP had just announced a 135% increase in profits for the first quarter, but all that anyone wanted to discuss was the Deepwater Horizon disaster. A sombre Hayward, who had spent the weekend co-ordinating the …