I would be very wary of any sort of processed meat or cheese. Make absolutely sure that you are not getting "hidden carbs" here, they can be full of fillers and sweeteners. Be careful with popcorn and similar snacks, artificial sweeteners (they just help you maintain a taste for sugar) and any sauces out of jars. Keep to food that looks like food.
OK, so here is our daily, low carb meal plan:
breakfast: any combination of the following, depending on what's in the fridge: cheese, eggs, cold meats, mushrooms, bacon, wilted spinach (very fast in the microwave), smoked salmon, cherry tomatoes, salad leaves.
lunch: typically a salad made up from salad leaves, cherry toms, avocado, red pepper, pumpkin and sunflower seeds, walnuts, plus a chunk of cheese or fish or cold meats. We might also have a home made soup, made without potatoes or thickeners.
dinner: basically protein and vegetables. (no spuds, rice, pasta etc). This can be in the form of a curry, casserole, bake or simple meat and two veg approach.
Note, there are usually no snacks and no deserts, However, if desperate, there are usually nuts available and sometimes we have raspberries and cream.
Drinks: black tea/coffee, herb/fruit teas, water, red wine. Coffee with full fat cream.
The above approach produced good weight loss, until our bodies decided we had reached the right levels, and HbA1c's in the low 30's.
Sally