"Banks operate like a man who either wears his trousers round his chest, stifling breathing, as now, ..." — Vince Cable

My time at Shell was a most valuable experience because it taught me to look at the world in a long-term way. Shell takes a 20-year view on events and plans for different scenarios. It makes you see the world as a kind of large matrix.

I know it sounds trite but I wanted to make a difference. Political debates with my father had been fraught because he was uncompromising and explosive but if he taught me one thing it was to air my views.

My college, Fitzwilliam, was pretty good but unfashionable and I lived in digs so I was not part of the cloistered 'old college' environment, which frankly was a bit intimidating. But I worked hard and settled in by exploring politics and girls.

When I was a child we were sufficiently well off for me to be a picky eater and I still cannot eat vegetables cooked in the traditional British manner.