So, no more JUDDDD for me. I've followed it for four weeks and it definitely works with increased levels of exercise and higher calories (I never went below 1000 calories on a DD, and I think I only went below 1200 twice, and I rarely do less than an hour of aerobic exercise per day - the average has been 2 hours plus flexibility and strength training on top of that).
I've lost a total of 8lb which makes 2lb per week. This is the same rate of loss I was already getting, so I'm pretty pleased. I am not going to stick with JUDDDD, because I don't find it comes naturally to me to eat that way, so I will go back to what I was already doing (which, for me, takes no thought at all) in order to lose this last little bit.
Incidentally, one stone from now I will have lost 100lb in total.