Michael Crawford

I really didn't realise until I got back the work that goes into a performance. You're like an athlete - if you haven't been practising things tighten up. I had to do a lot of practice work, but I got through it. Even when I was 21 I would have a 40-minute nap on the day of a show, and I will still do that.

In 2004, I was on the West End stage in The Woman In White, and for every show I had to climb into a fat suit to play the obese Count Fosco. It was hard work, and unbearably hot, but I sailed through because I'd always kept myself fit.

It is only when you watch the dense mass of thousands of ants, crowded together around the Hill, blackening the ground, that you begin to see the whole beast, and now you observe it thinking, planning, calculating. It is an intelligence, a kind of live computer, with crawling bits for its wits.