But obviously, things have changed in many ways since the '50s, when the show is started, in terms of sexuality, and how much access we have to images of it and information about it. But, the same problems always apply. It doesn't matter whether we know a lot more about sex now or if there's a lot more access to it. The same problems of intimacy, of dealing with other people, of connecting and being vulnerable with other people, which is what the show is ultimately about, still applies now, I think.

On the one hand Twitter gives you the opportunity to engage with people, which is great, but on the other there are people who feel they can say whatever they want, put poison out there, really, without fear of any repercussions.

So, if they're coming in and having to do scenes that involve nudity or sexuality, in some way, the utmost important thing is that everyone feels comfortable and safe. If there's any gray area, that's going to be a problem.

In the case of two actors connecting with each other and trusting each other, our bodies have memories without us having to consciously think about it, so rather than think, "Oh, I must think about my daughter dying," you just let that go and trust that you have all the emotions you need in there, and by losing yourself in the scene, that stuff kicks in without having to spend the day thinking about horrific things happening to your own child.

I live a very Kenneth Williams-like existence.

Hopefully, any character I play has an anchor in reality. The more fantastical characters, or fantastical worlds that they inhabit are really fun and allow you, in some ways, to tell stories and reveal things about our lives that would be harder to take, in a more realistic setting.

I'm a huge fan of science fiction and fantasy - not so much horror because I get a bit scared.