Jonathan Dimbleby

As it is, the grotesque distortions of the global market mean that for every dollar the West dispatches to Africa in the form of aid, two dollars are clawed back through subsidies and tariff barriers: a monumental rip-off by the rich as they instruct the poor to accept 'free' trade or else.

Food is about communal togetherness. Our family does sit at the table. I think it's a great tragedy if a family doesn't have a table, as there is such an atmosphere of good will and warmth when we have eight people sitting around it.

When people said Africa would change me, I didn't understand what they meant. To see the poverty in the townships, for instance, is overwhelming. I found it heart-wrenching to see young children walking barefoot and hungry in the dirt. I'm the kind of person who wants to change the world right here and now, so I got frustrated.