And what are your personal views on Hunter S. Thompson?

I think that he was one of the great comic writers of the twentieth century he also had a great vision of the deep contradictions of the American character an I think that is what really made him great.

And how does the writing process work for you?

Well for Gonzo I assembled Hunter’s word so every word is Hunter but I assembled them. It’s a peculiar process the writing process because it really comes at the end I mean part of it is structuring and with Hunter you needed to try and structure the narrative with stuff that he had already written, so that was trickier than structuring the narrative and throwing in rough narration and writing it properly at the end, we couldn’t re-write Hunter.

But writing in a documentary is all about the editing and finding that simple story around which everything can get complicated and I think there it’s important to think more about movie making I think Enron was a heist film and Taxi to the Dark Side was a murder mystery and Gonzo is a road movie I think.

And is there any particular message or image that you want to the film to portray of Hunter?

There is a kind of image of Hunter walking off into the distance with his strange funny lope, towards the end of the film, towards the mountains of Aspen and it sort of reminds me of that mythic shot of John Wayne in The Searchers framed by the dark hallway as he walks off into the desert alone, there’s something about the lone frontiers man walking off into the distance that is very powerful.

But with Hunter they is a funny bouncy gape almost as if he is laughing at the image as he is indulging in it.

And this film follows up Taxi to the Dark Side what is it about the documentary that you like so much as a filmmaker?

It captures a kind of messy, irrepressibly, contradictory reality and sometimes you can’t make this stuff up it’s wilder and more intriguing than fiction often.

And yet the new documentary, that I call it but it might not be that new, increasingly people are throwing out the old documentary form book they are playing with form in a way that is very satisfying so its not just a record it’s an altered record and that record that has a lot in common with fiction films except that there are no paid actors. But the reality is often more messy than the neat and tidy reality that you see in movies.

Taxi to the Dark Side focused on a taxi driver being beaten to death by American soldiers why did you want to tell this story?

It was a very important story is was a murder mystery that lead from the battle field of Afghanistan all the way through Guantanamo Bay to the White House and it’s a story about he corruption of the American character how or leaders, and to some extent with the complicity of the American people, could establish, in the attempt to spread democracy, could establish the opposite of it a policy of torture.

It was shocking to me and devastating to my dad who encouraged me to take it on but that was what we wanted to convey, that the United States had corrupted it’s own character by following this policy of Bush and Chaney which was torture.

Gonzo: The Life and Works of Hunter S Thompson is released 19th December

FemaleFirst Helen Earnshaw