Thanks for the comments guys, and welcome aboard Sweder, this should be quite a ride!
Already, just one week in I've seen a massive difference to my weight. In recent weeks my weight had basically plateaued around 81kg, despite 'conscientious' eating and regular running. This is 6-7kg above my proper race weight, but wouldn't budge. Since moving to a low-carb diet (a bit hard to count accurately, but well below the 30 gm/day that is normally prescribed on these programs) at the point indicated by the red arrow, you can see the weight has fallen away despite very little running. It's early days, being just one week into this business, but thus far it is working and even better, I have no hunger and no cravings to speak of at all. But more about that in a day or so...