Thanks for the replies. Cant find the export option for cncusb and it wants to router the holes rather than drill then but that could be the dxf.
Pcb2gcode wont output a gerber file.
I do have a copy of Diptrace which will do the job but I cant figure out the layers at the moment. I was hoping to get this one done quickly so I will probably send it to one of the board manufacturers tomorrow if they can take dxfs.

Regards

Ian