EDIT: The official name for the cable you need is 3-pin IEC C13, more commonly known as 'kettle' leads
Always find it amazing it's known as a kettle lead, caused a ton of problems when trying to buy the socket part rather than the plug for a build. I had no idea what I needed to search for, with "the socket a kettle lead plugs into".
I would drop OCUK a message about the plug, I'm sure they will get on top of it even more so if all the superflower PSU's are being sent out with foreign plugs.
Great looking parts list though Heavenkiss, looks like you've got the orange and black color scheme down, even with the GPU.