Thanks for all the helpful replies, I made quite a bit of fuss and the diabetic nurse called later on in the day apologising and blaming the new ordering system, my repeats have been put back to normal.
The GP and Nursing staff seem to understand but you cant get past the receptionists to talk to them, their policy is to refuse any requests for medication that do not come in writing. I have started a complaint that includes the issue of restricting insulin prescriptions when overdue a 6 month review. I am changing GP because of this so hopefully it wont happen again but still putting in a formal complaint as this will be happening to many others.
I had a similar problem a few months ago, helping my mum move house 250 miles away from where I live, the removals men accidentally packed up my kit and took off to the overnight depot before i realised. The local chemist had meters, strips, pens and insulin, told me to ask my GP who could email through a prescription. Had the same issue, they point blank refused to help, had to drive 500 miles to cobble together some spares and old pens i had at home. Admittedly my fault but shameful lack of understanding from GP.