I suggest speaking to Neil Wood at Victory Signs in Cramlington.
They've got all sorts of kit there, including some massive flat-beds, and I know they do a lot of bespoke precision work for industrial control panels etc. that requires them to work with a range of materials.
They did a vehicle wrap for the Euros in France for us this summer, have worked with us on signage and do all sorts of things like this. We've always found them dead good to deal with.
Hope that helps and good luck finding someone. :)