Scientology is not that different from other religions. And yet, at the same time, we don't have Anglicans doing the things that are alleged to be done in Scientology, at least in the Sea Org.

I sometimes get accused of being 'faux-naive,' but for me, it's really just about getting down to the basics of something.

Do I care about clothes and stuff? Not much. It's a bit sick, isn't it, people spending all that money on clothes? I'm too stingy. I wouldn't pay £100 for a shirt.

I think of myself as being quite affable, approachable, fairly easy to get to know.

'Cunnamulla' is a beautifully bleak portrait of a lonely town in which people are leading lives of sort of quiet desperation.

Not counting the brand of Sunni Islam practised by the so-called Islamic State, there is probably no religion in the world that comes in for more flak than Scientology.

There have been times when I've felt inappropriately emotional. I remember making 'The Most Hated Family in America' about the Westboro Baptist Church, and being on the way to a funeral of a U.S. soldier with the Phelps family; they were going to picket the funeral.

It's in the DNA of Scientology that they don't trust journalists.

The thing is, I have never been that confident, and, um, I have a lot of self-doubt, and I had never - I don't think I ever would have consciously chosen to be a television presenter.

I would love to make a film in the outback or in Papua New Guinea, in Port Moresby. I know that it's not in Australia, but it's not too far.

I've discovered I am quite a puritanical person.

True believers of Scientology seem to know with utmost certainty that they have found the answer to the deepest riddles of all time - they may or may not be right, but that kind of self-belief is very appealing.

In my normal way of doing things, there's a little bit of 'going native' that takes place, where you're in a world long enough, you can't really help but start to see things in a nuanced, more humanistic way. Just because you're with people and you start to, in general, slightly like the people you're with.

I'm not pugnacious or argumentative. I'd probably feel fear going into a pub in the Outback.

Empires will come and go. The Soviet Union collapses; China can become a superpower, but 'Blue Peter' stays the same.

I think Donald Trump's had a pattern of leaping on the bandwagon of anything that he feels will further his candidacy, and if that means sowing more fear and paranoia and playing into a kind of xenophobic populist strain, then that's what he will do.

Look after your body, because I'm 44, and things are happening that I never dreamed of - like bad joints and man boobs!

Although my dad's a writer, we grew up in a telly-watching household. I never found him disparaging about television.

I really do try not to emote. I don't like seeing it on documentaries - it seems a bit unprofessional. I also need to be human being and be a kind of sympathetic presence for the contributors I'm with, so there' a line you have to walk.

I never thought I would really like to be on television, and the story of me getting into it was quite lucky, really, just a series of chance encounters. So I am not exactly putting myself across as a celebrity, although people might perceive me that way.

I think he could win, absolutely. I think he could win because there's Trump supporters out there who aren't even revealing themselves as such. For me, that's a scary prospect because I think he'd be a disastrous president.

Celebrity is quite a fraught word. It is not something I aspire to, but I can certainly see why it could be.

People say I'm deceptively unassuming, but that's the way I go through life. I'm not flash. You can make it sound calculated, but it's pretty much just me.

When you're in your 40s, you become more conscious of life being of limited duration and that you need to create memories and go on little adventures from time to time.

I am genuinely a bit confused about the world, a little bit bumbling.

I don't like watching things where I think the people onscreen are ahead of me or assuming I know something that I don't know.

One of the things I have always enjoyed about Scientology is their proactive approach to journalists who are covering them.

Meeting forensic patients for the first time could occasionally be an unnerving experience. They often came across as mild and gentle people, but the details of the crimes were harrowing in the extreme.

There is no religion that has a monopoly on bigotry.

I don't feel that as human beings we have an obligation to dislike someone based on their beliefs, and it's OK to have a human reaction to someone even if you feel what they do is hideous and objectionable. You can still enjoy their company and find them interesting to be around.

There is no shame is being ambivalent about almost everything in your life.

For publicity purposes, everything gets simplified, and the fact that I wear glasses and am somewhat bookish makes me a geek. That's fine; there needs to be a shorthand, but there are important geek traits that I don't really share.

Some things should remain private.

In west London where I live, white people are a minority. In the area I am in, which is the borough of Brent, whites are less than 50%.

I tell people I live in Harlesden in north-west London, and I can see them thinking, 'Why do you live there?'

It's difficult to describe the weirdness of speaking to a man who appears to be perfectly in control of his faculties, who can deliver off-the-cuff repartee, and yet who is actually utterly disconnected from who he is.

I've always slightly harboured a dream of making a film, a documentary feature. Somehow, I just got into a way of working a routine of making TV docs.

I have been to a few A-list parties, but not massively. It's not my life, but it's fun dipping into it.

Prisons and jails, I tend to feel that you're actually safer as a journalist than you might think, certainly more than it appears.

Sometimes you shoot for 40 or 50 hours for a one-hour show, and you have to make some very hard choices.

I both admired my father and his writing, and I saw how much he valued it.

There's obviously a lot of controversy around the issue of hunting as there is around gambling, and I like these stories where there is a moral dimension, stories that force you to think about your prejudices about a subject and explore the extent to which they are justified.

I am always drawn to things that feel different to what I would experience at home: things that offer a combination of unfamiliarity and a sort of bleak glamour. I think the outback has that.

I'm not trying to acquire a reputation as serious documentary maker for its own sake.

I think people are so immersed in the anti-Scientology mindset by consuming tabloid media and stories about space aliens. It's baffling. When I say I want to see a more positive side of the church, all I'm saying is I want to get past these headlines that talk about aliens and Tom Cruise jumping on a sofa.

I'm following my interests, and there's something about investigating the world and creating a watchable, entertaining programme out of it that is deeply satisfying.

I think everybody carries a slight sense of being different, and I know that it comes very naturally to me.

I've got an interest in Zimbabwe. I spent a few months there before uni, so I'd like to get back to that.

After studying the subject for years, watching countless YouTube videos of Scientology handlers filming critics and journalists, it felt amazing to be on the receiving end myself: I felt like I'd been blooded.

I've always seen TV as... it didn't occupy the same rarefied space as literature, but it's art you can use day to day. I've never been hung up on where it figures in the hierarchy of learning.