I've done loads of things people have never seen, dramas on BBC4 and plays upstairs at the Royal Court and the Bush, and because I didn't go to drama school, they gave me an education.

I'm sure that my father becoming seriously ill when I was 14 had a lot to do with my going from chubby to fat.

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.

I'll probably always be 'Timothy Spall's son' and it's something I'm proud of. Maybe one day as well as that, they'll say of Timothy Spall that 'He's Rafe Spall's dad'.

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

I love doing comedy, I really do. It was perhaps my first love. And I think, as an actor, you're young and you do school plays and the reason you go 'I might do more of this' is because you make people laugh in a school play. You don't go and do Hamlet when you're nine and go: "I feel people were really moved out there!" You do a silly voice and everyone laughs and you go: "Ooh, that feels quite nice. I might make a life out of this!"

You do stuff that gets a reaction and you think 'that's a winner' and then it never sees the light of day. But the thing with improvisation is that 90% of what you come up with won't be used and for good reason. But you keep going for the occasional gem that you might come up with. You do a scene and a lot of the time. We wouldn't cut. So, you come up with something that might be funny and then you go, 'alright, what else'? So, you kind of throw stuff against the wall and see what happens. But you've got to be prepared to make a fool of yourself.