They did on the first postHi. I don't think you have mentioned so far what what your weight/BMI is? This is quite important as a pointer to whether you are a T2 with insulin resistance or a late onset T1 (LADA). If you are slim and losing weight then LADA is quite likely. With excess weight, insulin resistance is likely. I think you know that keeping the carbs down should help a lot. The three drugs you have should be helping (I've been on all of them). The Gliclazide dose is very low and could be increased by the GP but may not relevant if you do have excess weight. There is a weekly injectable that may be relevant and worth discussing with the GP. So, do what can in reducing the carbs in your diet and let us know where you weight is.
150cm, 53kg
Which is within normal bands for BMI (23.6)
There are medical increase possibilities of course, Metformin is half max dosage too, but as per my experience this is a sticking plaster to kick the can down the road. But potential for other varients and having tests to confirm seems a sensible approach
We can't diagnose clearly, there are many factors at play such as progressive nature of T2 (carb control lacking) or potential for a different varient