Just.... No.
They are that easy to make yourself, there honestly isn't any point in buying one.
i very much doubt OCUK would be selling them any time, soon, i would be slightly disappointed if they did, they are better than selling overpriced desks.
Having said that, i have spoke to peter brands (the guy who pretty much started these desks off with the "l3p" desk) and he is a really nice guy, so nothing against the company as a whole.
I had started to design one to go into the area where my table goes now, but every one seems to be making them at the moment, they are fast becoming boring.