I’ve been an actor for 10 years now, and if anything I want to talk more about my dad. He taught me that even if you get past the casting director’s door you’ve still got to do your homework: you’ve still got to work hard.

Because I was always a fat child, I got fatter and fatter, and I ended up 18 stone and with a 40-inch waist.

Doing Prometheus was what you imagine being an actor is like when you're five. In a spacesuit, on another planet, getting killed by an alien. It was a real treat, it felt like being a part of movie history.

Every audition I get, I agonise over and I put everything I can into it.

I never mind talking about my dad. I'm proud of who he is, and being his son is one of the things I'm most proud of. To be constantly compared to someone so brilliant, who happens to be your dad, is cool.

I think one of the main differences between being an English actor and being an American actor is that we have things like the class system in England.I'm middle class. But I've got what some people might consider to be a working-class accent, so you've got those sorts of elements in this country to consider, which, in America, exist, but not necessarily in the same way.

If you're a casting director, you're going to be curious to see what Timothy Spall's son is like. But when you get in the door, you have to have something to offer.