Iceland do a range of slimming world meals, sausages and meatballs that are syn free. All the meal packets have the recipe on the side so if you like it, you can cook up a batch and make your own freezer ready meals. Not a long term everyday thing but whilst your getting your head round it having a few don't have to think to hard meals is a bit of a diet saver.
Jacket potatos, omlet, all day breakfast (sliced canned potato, baked beans, bacon medalions, tomatos, mushrooms, egg) less than 1% fat mug shots, most muller light yogurts are a good basic shopping list starter along with lots of herbs, spices and stock, pasta, rice, potatos lots of fruit and veg.
Traditional meat and two veg type meals are another good go too. Steak (trimed of fat), slimming world chips and salad or grilled chicken/ gammon/ pork/ lamb boiled new potato and veg.
Fresh or frozen stir fry veg packs that you can add some meat/ prawns too and then some noodles or rice are great. Oyster sauce and soy sauce are syn free so if you like them good cupboard staples.
At group most consultants seam to have lots if class copy recipe books on the table. If you've got a camera phone have a flick through and take a few shots of things you fancy trying. If you can think of the sort of meal you want you can search for it on the slimming world website.
Lots of really good not official slimming world groups on facebook and other forums but just watch out for tweaks - use of a food in a way it wasn't designed to be used. For example using lasagne sheets cut up as tortilla chips (they're not bad) but they're not syn free in the way lasagne sheets would be when used as part of alasagne because the drying out process etc changes the way the body metabolises them and they don't satisfy your appetite in the way they would when used as intended.
Invest in freezer boxes if you've got a freezer or decent freezer bags, batch cook and for goodness sake label. All you'll end up serving veg curry with pasta and arribiatta with rice (actually thats not too bad).
Meal plan before you shop so you don't overbuy fruit and veg. If you like simple veg frozen is a good back up and doesn't go off as quickly as fresh.