plastics
Profile Plastics
42-44 Malvern Street, Bayswater 3153
0397612180
These helpful guys have a wide range of plasics and the skill to make what you need.
They can take a dxf formatted design and cnc it from you plastic of choice. Unlike some who are only interested if your looking at a large order these guys where happy to cnc my one off request.
If your just needing a small amount of plastic they have offcuts in their reception for a dollar or so.