Caroline Hill finds out how BG Group’s enigmatic GC Graham Vinter escaped his humble Chichester upbringing to be headhunted for the top legal role at a FTSE oil giant

As I make my way to BG Group’s nondescript London office in Jermyn Street to meet general counsel Graham Vinter, I have a long, orderly, admittedly slightly dull list of questions to ask and a fairly certain idea of how the interview will proceed.