Lexan source - help please !

[Nige55]

Hi Guys,
Bought a vacuum former last weekend, have a mould already to try, but just can't find any Lexan / polycarbonate in the UK that's thin enough or cheap enough.
I need sheets that are at least 11" by 11", ideally 0.5mm thick and clear (for bodies).
Has anyone got any sources in the UK for this ? I've looked at all mayor polycarbonate suppliers online in the UK, and the're all too thick (the lexan, not the suppliers ).

Help appreciated ! Would appreciate advice on how to prep the lexan for forming too.

Thanks, Nige.