There's a little good news and more bad news here. We all love those, but unfortunately diabetes loves them more and if you're going to beat it, those foods need to be limited (not telling you anything you don't know already there).
Let's start with what you can "replace". None of the alternatives/substitutes are cheap, but some are available:
Bread - Waitrose do Livlife bread. It's the closest to normal bread I've found, £2 for a small loaf, but freezes and toasts well. 3.4g carbs per slice, compared to 15-25g per slice of normal bread of any type. In addition, the supplier I linked to in my previous post do this -
https://handcraftedbread.co.uk/product/low-carb-400g-tin/ - which is more expensive than Livlife, but lower carb again at 1.4g per slice. Freezes well, but doesn't toast quite as well as Livlife.
Rice - Cauliflower rice is the best alternative I've found to real deal rice. It's not going to fool you into thinking you're eating real rice, but it's decent in my opinion. You can make your own (several experts at that on this forum, but doesn't keep for long), or for longer shelf life and convenience you can buy microwavable pouches from several supermarkets (Tesco, Waitrose and Aldi are definites) -
https://www.tesco.com/groceries/en-GB/products/289796703
Pasta - Haven't really found any amazing alternatives unfortunately, but this is about the best of an average down to bad bunch (some very bad, e.g. konjac products) -
https://carbzone.co.uk/collections/pasta
Crackers - Olina's Bakehouse, available at Waitrose and Holland & Barrett -
https://www.waitrose.com/ecom/products/olinas-gluten-free-seeded-crackers/829405-791235-791236 and
https://www.hollandandbarrett.com/s...ehouse-pumpkin-seed-flatbread-100g-6100001915
Crisps - You're out of luck here, they're all high carb. Some pork scratchings are good alternatives, but check carb values. Beyond that, your best bet is cheese based snacks, such as Cheesies (
https://www.hollandandbarrett.com/shop/product/cheesies-cheddar-snack-6100139854) or Monarchs (
https://monarchscrisps.co.uk). Neither are cheap.
Sweet treats - Ketoroma (
https://ketoroma.com) are the best supplier I've found for these. They do a low carb range. They're not cheap, but the low carb carrot cake and chocolate cake are good in my opinion. The low carb sausage rolls are ok too, if that's your thing. If it says out of stock, check back a couple of days later, as they have limited production capacity.
I tend to keep the above for occasional treats (birthdays, Xmas etc), or for where I need shelf stable convenient food (days out etc). Other than that, I focus my diet on the options that
@MrsA2 and
@JoKalsbeek suggested.