Hi Happyness,
Well done on losing that first stone...it's probably already having an impact. For me, as a bona-fide salad dodger in my pre-diabetes days, introducing a lot more green into the diet. For someone who has followed the traditional diet norms previously, I think the counter-intuitive thing is taking on board that fat is actually okay, and its the carbs that need to be reduced. As with others, I've found that cooking from scratch, or at least as best I can, makes a big difference. I'll have a few slices of Nimble bread, but mostly avoid bread where possible, plus I might have a couple of roasties with the Sunday roast, but apart from that don't really do potatoes any more.
Actually looking at the carb levels of some things really shocked me though, my old Fray Bentos pies take up a two or three day intake of carbs for me now! For me, testing is key, as that's how you know you are doing well. Combine it with regular exercise, and the weight will come off.