Hi Sean
I'm like Alaska in that I find a low carb diet much better for stable blood sugars, to be honest even on NO carbs which I have done for a few days I still need nearly the same amount of insulin I need when eating carbs (weird) but I am so level with my control...no spikes and no peaks and troughs.
I am low carbing now and am eating a lot of foods really for the calories, more variety and food than when I was eating carbs, as even with dose adjustment I found carbs to be unpredictable with my control . I got fed up of being on a rollercoaster with them included into my diet that I thought I would go back to the Atkins type principles which I had used in the past, twice to blitz post pregnancy weight gain.
I agree with Alaska really try to ditch the chocolate and crisps, go for a banana or some pineapple chunks instead ,or rice cakes if you need/want the carbs.
You do sound like you don't eat a bad main meal but fish and chips would kill me for high sugars,along with pasta. I have a bolognaise but with a variety of steamed mixed veg, broccoli cauliflower, peas and a small salad with dressing on...very nice it is too. Cottage pie sounds fine if it's with plenty of veg...and not chips :lol:
It really is about making small, achievable,steady changes at first and monitor your BG a lot to see where this is taking your control. I can fully understand your work predicament, I have a very physical job and low blood sugars would put mine and other peoples lives at risk ,so it really is impossible form me to even consider this at work. So I used to run them higher when working keeping them topped up with carbs ...now with low/no carbs they are steady nearly all of the time and I am getting my confidence back to not check as much.
You could possibly try the changes when you are next on holiday and see how you go, or over the weekend. When you can test and Hypo's are not as serious to you.
It really is trial and error to find what gives you optimal control and also enable's you to carry on with daily life. It is a balancing act for us all, but do experiment because there will be a better way for you somewhere ....and hopefully better health along with it.
I run a lot and have just done a full marathon on my low carb diet and had the best steadiest control I have had in years the whole way through it...My sugars stayed between 7/9 the whole way and I ended up with a reading of 5.2...on a full cooked breakfast..low carbs...And a better time to boot
Hope some of this ramble helps, and good luck