ergis as chief executive in 1996 and guided the company from an underperforming division of the National Grid through to a successful stock market flotation in 1997. The company is worth &#163;4.7bn.  <P>When he took over, the business had revenues of just &#163;42.7m and losses at the Ebitda (earnings before interest, taxes, depreciation and amortisation) level of &#163;42.6m.  <P>His only other job had been at BT. He joined the Post Office as a graduate trainee in its telecoms department before it was spu