I've mentioned that we strongly prefer to use cash rather than Berkshire stock in acquisitions. A study of the record will tell you why: If you aggregate all of our stock-only mergers (excluding those we did with two affiliated companies, Diversified Retailing and Blue Chip Stamps), you will find that our shareholders are slightly worse off than they would have been had I not done the transactions. Though it hurts me to say it, when I've issued stock, I've cost you money.

A few ex-girlfriends in my teens. I didn’t know how to treat a lady.

To my Latin teacher – I was very naughty.

To my father, for the time that was lost when we weren’t getting along. We were able to reconcile a few months before he passed away five years ago.

Everyone cutting out social media for one day a week.

When I got a doctorate from my alma mater, Brunel. My mother always wanted me to become a doctor.

I am an ambassador for Rotary, and we are very close to eradicating polio. When I was younger, I lived in Mumbai and, as a kid from England, I was traumatised by seeing children on the street without limbs.

Redeeming mortgages. I did it for a few weeks, and it sealed the deal that I wanted a career in entertainment.

Mathew Varghese, an orthopaedic surgeon who runs India’s only polio ward in Delhi. He provides reconstructive surgery to help survivors walk.

I was rejected by EastEnders, having been called three times. I was heartbroken.