I was frustrated as a child when I had to use a vacuum. It had a screaming noise and the smell of stale dog and a lack of performance.

Engineering undergraduates should not be charged fees. They should receive grants, not student loans, and the government will get the money back long-term from increased exports.

Emerging markets are hugely important.

[In my home workshop,] generally I'm mending things, which is interesting because you learn a lot about why they broke.

Manufacturing is more than just putting parts together. It's coming up with ideas, testing principles and perfecting the engineering, as well as final assembly.

I've obviously used fans - I wouldn't say all my life, because we couldn't afford them when I was young, but from my 20s and onwards we've had to use fans. And I've always loathed them. Everything about them. The way you adjust them, getting them at the angle you want. Carrying them. Cleaning them. The danger of putting your finger in them.

There's nothing wrong with things taking time.