Hazy, having read through this thread I have been impelled to register & post.
First & foremost you need to realise one thing about your diabetes & it is simply that, it is YOUR diabetes, not your Dr's or consultants. These people however much they have trained only know about diabetes what they have been taught or read. You are actually living with it.
Don't get me wrong, I'm not for one minute saying that all Doc's are fools because they aren't but they have to cover a broad spectrum of the condition whereas you may or may not fit into that spectrum somewhere.
Take it or leave it here's a bit of advice for you, this weekend, assuming you won't be at work, carry out some tests. Firstly, make sure you have some sugary drinks and / or glucose sweets in the house, then on Saturday morning at the usual time, take your insulin but take 1.5 times the usual dose & then eat as you normally would. Do this for each injection, take 1.5 times what you would normally take. Now the key here that you will need to monitor your bloods every hour or so to build up a picture.
With any luck you will see your BS fall, maybe a little, maybe a lot. If at the end of the day your bloods have decreased but are still a little high then on Sunday morning increase your insulin some more & repeat the testing. Take control Hazy, be the boss. Only you will know when you feel right but you need to wrestle control back from the diabetes, control it don't let it control or run your life.
There is no table that anyone can consult that tells them how much insulin a person needs, everyone is different & from experience the sands are constantly shifting on the amount you should take. I gave up on my consultant after about 2 years, my knowledge of my condition was superior to his.
I'm screened every year at my GP's surgery & LUCKILY I have met a fantastic practice nurse who I feel 100% at ease with, she doesn't try to tell me what I should or shouldn't be doing but she actually cares about me or at least that is the feeling she instils in me. My current HbA1c is running at 7 which I am well chuffed with & that has been achieved my ME not the Dr's or consultants.
Good luck Hazy, don't feel like you are alone in this but realise that it is only YOU that can be in control
Gaz xx