UK no stock anywhere even mouser, 4tronix on ebay have some, got my Due next day (today) I would say genuine, you can tell , aligned and clear screen print, aligned components (the ferrite inductor is slightly off but I forgive that), no hand soldering, no flux residue, crisp pcb edge routing, the only snap off is under the power connector (maybe 1 near the reset switch) clear underside text for usb .
Did i say it connects and downloadstoo. Im very impressed.My first Arduino.My first bare metal arm. Pic 33 dust.