As retail goes through a fundamental shift into the digital world, I believe Ocado's model and the high standards of customer service it provides will see it emerge as a powerful online player.

I don't believe in retirement.

Listen, it's not nice to have your mum kill herself, that is difficult. But at the end of the day, it happened a long time ago. My mother was, I hope, not the reason that I have been successful. It's not as simplistic as 'My mum killed herself; I've got to prove myself.' I was very lucky that my parents took an interest in me...

I am the largest market shareholder of clothing in the UK and I am not a destination shop for food. If the clothing market is affected - and it has been - and I hold my market share mathematically, then fine, I am doing no worse than the market is doing, which is exactly the case, but I'm losing revenue.

Our world is moving at an ever-accelerating pace, and with the advent of social media, what happens in New York now can be reported across the globe 60 seconds later.

I think that business leaders today have to be more rounded than they used to be, they have to be completely multi-functional and fast-moving.

My four criteria: I don't want to work with people I don't like; I don't want to work in a business I either don't like or don't understand; I don't want to work for nothing unless I choose to, and I do a fair amount of that already; and I want to have some fun.