I know this because of the very first thing he said to me.

Jude Law:Are journalists like policemen?

They do seem to, actually.

But yo, go on.

Dont let me interrupt you.

Kevin MacDonald:I think a journalists best tool is to be silent themselves.

JL:Its a little bit of both.

KM:We reached the accent through working at it and trying a number of different things.

JL:It was a process, but the idea was instinctual.

Just felt that he couldnt come from Lewisham, like me.

It wouldnt sound right, I dont know why.

The process started with us going right back to asking Where did he come from?

KM:We talked also about how hes a really clever guy but the Navy is quite classist.

JL:Hell only ever get to a certain level.

Its somewhere that a lot of submariners used to come from.

Then I think you just liked the accent…

JL:I really liked it.

JL:Theres a methodical nature to it.

Thats the word Im looking for.

Theres a great social comment interwoven with the heist and the thriller.

Its not just somebody who sounds, looks and acts like Jude.

It becomes a statement that hes being somebody else.

That was the thing you were doing next, wasnt it?

JL:It already fit in.

KM:That fed into what you were doing here.

By filming on a submarine a lot of your aesthetic choices are already made for you.

How did this work for and against you?

They might want to run around, but they cant.

If youve got a second camera, bloody hell, you cant even breathe.

But I started to see those restrictions as being really positive.

Theyre what makes it feel claustrophobic.

You didnt have any fly walls at all?

KM:No, no.

That was the aesthetic decision.

I hope we made the right decision.

you’re free to sense that the camera could never be where it was.

I think you did make the right decision for this film.

Thank you Kevin and Jude.

Black Sea is out now.