Often as a child you see someone with a learning disability or Down's Syndrome and my mum and dad were always very quick to explain exactly what was going on and to be in their own way inclusive and welcoming.

The film is about Joe discovering who his mother and father are and his relationship with them, and the identity crisis he goes through once he finds out who his parents are.

I loved playing [the Doctor], and taking part in the basic essence and message of the series which is, it's a short life, seize it, and live it as fully as you can. Care for others. Be respectful of all other life forms, regardless of colour or creed. To be part of that was fantastic.

Any horror element is as much psychological as special effects.

I've never been up with the times, always been slightly out of step.

I got a tiny part in a play, auditioned for another one and got that as well. Not only that, the first finished on the Saturday and the other started on the Monday which is like an actor's dream!

It can be very difficult to trace your birth parents.