The sudden and sensational resignation of Kerry-born BP chief executive Bernard Looney on Tuesday has left the oil giant in crisis. And it has also focused attention on Looney, one of the most influential corporate executives in Britain. Following allegations by a whistleblower, the 53-year-old, who had joined the company at 21, admitted to the board that he had failed to disclose the extent of past personal relationships with colleagues at the London-headquartered oil and gas giant. According to BP, its board in May 2022 received and investigated “allegations” relating to Looney’s “conduct in respect of personal relationships with company…