Just wanted to add a bit to last post through experience. I started metformin on Tuesday (1 x 850 in morning and same in evening)and bought my own meter for testing as I had been refused one from the clinic.
Yesterday, after a going round shops and walking quite a bit between places, I began to feel hot and sweaty, shaky, anxious and faint. It was a weird feeling and I just felt I had to get home quick. I tested and reading was at 4. (it was 12.1 at 9am and this happened about 1ish).I phoned diabetic nurse as I was worried I may be on verge of a hypo but had thought this impossible unless injecting. Turns out I have been started on too high a dose and she advised me not to take any metformin over the weekend and to collect a new prescription on Monday for 500g and start on 1 per day building up gradually to 2.
The moral of the story is I would never have known what was wrong with me if I had't been able to test and maybe could have ended up with a proper hypo over the weekend. I am lucky that my surgery has very helpful diabetic nurse.
Anybody reading this should sign the petition on directgov website for T2 diabetics to be provided with testing equipment. I found the link in one of the forums but can't remember which one.