Before I got Doctor Who, I went to the Guildhall School of Music and Drama. I went back to take the final grade exam, which is the grade you have to take before you can take the teachers diploma.

I like the stories with the historical themes.

The cybermen are good monsters, I think. My earliest memories are of the cybermen from when I used to watch when I was younger. It's nice to have them back.

When we went to Belfast we saw some beautiful countryside and coastlines.

I thought The Visitation was good fun. We did some of that filming at Ealing on the big set.

In the studio, if they need to come down to the floor, things are a bit pushy, although it is easier for them to say things directly rather than through about five people.

Doctor Who is like any long-running series in that the cast tend to look to the star to set the general tone. Rehearsals and filming could be a lot of fun.