Hi and welcome,
Any diabetic should notify the DVLA. Type 1 diabetics usually have their liciences reviewed three yearly. This usually consists of you having a fields test, making sure you haven't suffered any Hypo's ( low sugar). This can be done with your Gp, but usually if you give them the name of your consultants or any other doctor your under they usually just write to them, but make an appointment to have a fields test.
Is your control well maintained?
I had my llicience revoked 2 years ago, but i have had a lot of problems with my sight especially my left eye, but then i have had diabetes for 37yrs this year.
I wasn't well controlled till the last 5 yrs, always thought i could cheat and get away with it, have learnt a big lesson.
Please take note of any advice you get, remember we are not doctors, but as good as, as we have gone through all the stages (especially the older diabetic).
You should be fine, keep in touch. Don't stress yourself as that will up your sugars.
Good luck
Tracey