Hi Dom, this one came off Ebay (from Australia) and cost me the princely sum of �22! I just cut a piece of leather the same size and slipped it underneath, and after a years use, finally glued it together and did a few stitches to stop any movement (probably not really necessary, as it went fine for a year). I'll do a few coleus pictures a bit later. The manufacturers sticker was underneath, but now Ive glued over this. I'll have a trawl on eBay and see if I can identify it from memory.
PS This is the small version, they also do a bigger one, for armchair comfort types!