I've lost 3 stone in about a year, by counting calories, and taking up exercise, including running for the first time since primary school (C25k). This week I lost another 2 lbs (much to my surprise as all the snow and cold has cut down my running), and my BMI was 24.9, so I've passed that barrier at last! I am very proud of myself, and feel and look tons better than this time last year. I feel reasonably confident that I can keep my weight down as I have made major lifestyle changes, mainly in terms of exercise - I still like my wine and have to ration chocolate and other favourite foods, but I balance it with exercise.
To anyone starting out on this programme: This NHS Choices approach really works! If I can do it, anyone can.