I do have a bit of a fear of heights. But I don't get scared of heights when I am flying a plane.

I am not going to pretend that flying a spaceship will be as safe as getting in a 747 with four engines for a flight across the Atlantic.

I am uncomfortable with heights, I'm scared of the dark and I am scared of big crowds.

By my mid-30s, I just thought, 'This is not going to happen. I am never going to become an astronaut in the U.K.'

I am a bit of a daydreamer.

I am a bit of a lefty on some issues.