I think Isambard Kingdom Brunel would be a good chap to have supper with. Anyone who builds a railway and then builds a steamship when he gets to Bristol and can't go any further must be a good chap.
I've probably got lots of heroes. One is a chap called Charles Campbell - he is a wonderful chap. We cooked together in a nightclub in Notting Hill. He told me brilliant stories of food and life and generally put me on the right track.