Has anyone been diagnosed with GD who is low risk?

I live in the UK, and in my area the midwife won't test for Gestational Diabetes unless you have some of the risk factors. Admittedly I do have a fair amount of sugar in my diet and I am concerned about developing the condition (currently 28+2 weeks). Even though I'm low risk, I would like to be tested as a precaution! Should I see my GP about this since my Midwife is unwilling to test me?

Also, has anyone who is perceived as low risk gone on to develop GD?