There are no quick wins in business - it takes years to become an overnight success.

When you are ready to make your first hires, look for people who understand your passion, want to add to your ideas and can envision ways to make improvements.

So unlike having to convert, you know, all the cars' or all the lorries' petrol stations, once you've actually got the clean fuels, it's relatively easy to, you know, get it to the airplanes.

I am convinced that companies should put staff first, customers second and shareholders third - ultimately that's in the best interest of customers and shareholders.

I have always believed that there is no point in having regrets as you learn far more from mistakes than successes. Embrace a mistake and learn from it; don't regret them.

We will be producing supersonic planes which will go far, far faster than Concordes. New York to Tokyo could be less than an hour. You could be traveling at 19,000 miles an hour orbitally.

I rely far more on gut instinct than researching huge amounts of statistics.