Hi
@Georgiee What are your BG levels like now ? DVLA states you can drive 45 minutes after your BG levels return to normal, so above 5 mmol/l. Have you advised them of your type 1 status ?
In regards to treatment you did fine there, you waited until they were above 4 before treating with carbs, personally I try to eat something with 10g of carbs so I don't rise too high after the event on the rebound, so for me it's a piece of toast. It's wise to avoid night time hypos though, so as your newly diagnosed, I would call your nurse/GP to explain this today and adjust your insulin, it's important you avoid these, please let us know how you get on ?