I'm not the sort of person who fears failure.

If I'm setting up a new business I'll spend three or four months learning everything there is about that business, everything there is about that subject and then I will find good people to run it on a day-to-day basis, but whilst they're running it at least I know what they're talking about when they come back to me.

One of the best bits of advice I can give is, early on, when you're building a new business, try to find somebody to run it on a day-to-day basis to free yourself up to look at the bigger picture.

Take a chance - it's the best way to test yourself, have fund and push boundaries.

When I was 15, I left school to start a magazine, and it became a success because I wouldn't take no for an answer. I remember banging on James Baldwin's door to ask for an interview when he came to England. Then I got Jean-Paul Sartre's home phone number and asked him to contribute. If I'd been 30, he might have said no, but I was a 15-year-old with passion and he was charmed. Making money was always just a side product of having a good time and creating things nobody'd seen before.

I myself have invested in Uber and Hailo, I think they offer great alternatives to disrupt markets that have remained unchanged for many years.

No matter how big you are, details count!