Wasn't sure how interested people would be in seeing the CAD drawings but thought I'd at least upload it for those who might want to see it.
Below is the layout I've sent to be cut. There are 6 sheets of 2440mm x 1220mm, 3 at 15mm deep, 1 at 18mm and 2 at 3mm. Each sheet has several of the pieces nested onto it to try and save as much wood as possible but as you can see there is loads of wood there :sigh:.
I've not really played with CAD much but I had so much fun doing this. When it came to doing it in Sketchup having the CAD drawing done it was actually a really good exercise to make sure all the pieces fitted. I had to make a couple of minor adjustments but everything was pretty much spot on.