So my current mattress is now shaped like a trapezoid for various unimportant reasons, and I'm looking at getting a Long Double as a replacement (because I need the extra length, but I'm in a small room and minimizing width is important).
Long Double sizing: 135cm x 203cm

Now, does anyone know where one can get quality cotton sheets (preferably of the fitted variety) to suit a long double mattress? I've done a bit of googling but turned nothing up.