Haha, no don't worry Chirone, I'd use render layers for colour etc, as it was an Occlusion pre-viz I thought I'd just let it get on a do it's thing.

He probably will ask for things to be tweaked here and there so I've been preparing myself for that kind of thing. Luckily I do have quite a large say in how this will all look in the final results so it's not as bad as it could be with some jobs!