Your diet is actually not as healthy as you think if you have hypoglycemia. Here are the problems with it:
1. Coffee or tea: you can have decaffeinated coffee or tea, but nothing else other than herbal tea. If your coffee or tea has caffeine in it, don't drink it!
2. Rusks: rusks I see are like a bread product, which must be avoided at first, again don't eat this.
3. I don't know what mealie pap is, but if it's a form of grain or bread product, don't eat it!
4. Sugar: do I even need to comment on this? I can't believe you said your diet was healthy and this is part of it. Never, ever eat sugar like this ever again, it's harming you big time.
5. Milk: bad news at first. Unless you can get raw, unpasteurized organic milk forget it. Too much crap in what you get at the stores and it spikes your blood sugar too quickly. Don't drink it.
6. Toast: no bread!
7. Marmite/bovril: never heard of this, but if it's a grain, again, don't eat it!
8. Pasta: no, all forms of it must be avoided at first.
9. Rice: nope, especially white. Some people can handle brown, but it depends on your symptoms.
10. Carrots: no, too much sugar and too many carbohydrates.
11. Peas: same as carrots pretty much, one of the only above ground vegetables that must be avoided at first.
12. Beans are okay as long as they're not dried beans like kidney beans or black beans. Green beans are okay.
13. Look for my diet thread on this forum and read the whole thing over and over to get tips on what to do next.