I am somewhere between sixteen and seventeen stone, I am riding a Felt F65 borrowed off a mate, seems fairly solid and to be putting up with my weight, though I may go for something a little lest slinky when CTW comes around again.
I have Cannondale Bad Boy and that says "No Rider Weight Limit" in the blurb, so might be worth looking at Cannondales, I suppose being American there is little point in designing somethign with a weight limit and ruling out so much of the population, Americans, ok they tend to being big people in terms of fat but also there are a lot of "jock" type blokes that are six and a half feet tall walls of muscle at twenty or so stone so it may be worth lookign to the American forums/market and look what the heavier guys ride, though by the sound of it you will be a lightweight soon anyway, congratulation on the weight loss.
I personally have been commuting just over a year, havent lost much but also, I havent put any on and eat quite a lot, I enjoy food more, it doesnt sit on my stomach like it used to and I think at some point soon I may start taking it seriously to drop this pesky two stone once and for all, involves stopping drinking beer though, for that reason, Im out
For now, anyway.
Thank You 
