Hey frazerl!
Firstly, I agree with librarising that you really do need to test to find out what different foods are doing to you. The medical profession is fixated on Type 2s not needing to test, but they are quite simply wrong.
Secondly, your high figures recently could be due to an infection. Maybe you are starting with a cold or something?
Finally, there is a possibility you are not Type 2 but LADA which is a slow onset form of Type 1. Many of us were initially misdiagnosed as Type 2 and told not to test, only to find within a year our BGs were very high. You need to test to establish a pattern of what is going on. If there is any doubt in the Type 2 diagnosis, your doctor needs to do two tests: GAD antibody test to check for the presence of antibodies destroying your pancreatic beta cells and c-peptide test to check how much insulin you are actually producing. The doctor will probably be reluctant to do this due to cost, but looking at your figures, there is a possibility you have been misdiagnosed.
Smidge