Hiya Leaford
I just picked up the multiplug housing at a local DIY store. The neat bit is it's assembled from spare infinity leads - all our UK sellers include a UK power cord, but they still leave the continental or US one in the box. I just snipped off the plug, stripped the cable and wired it up. Takes a bit of fiddling around (so your octopus legs are all the same length!) but it's way worth it.
I'll try and find a link to the actual part (can't remember what they called it).
Emp