Hi There,
Have you tried carrying glucose tablets with you? I get the lucozade ones which I usually have 2 or 3 of if I am hypo.
The last time I was hypo was really scary, I was travelling to Leeds on the train, had to change at doncaster, just as we were getting into doncaster and trying to get off the train I felt really light headed and thought I was going to pass out, my blood sugar was 1.9!!!!! Thankfully, we had to wait 40 minutes for our next train, so I took some glucose tablets and also I have one of those mini mars bars, and within 10 minutes I was fine again. Whenever I go anywhere, I always make sure I have some of the mini mars bars and glucose tablets with me. You can buy the glucose tablets from any chemist, but don't go taking too many, I think 2 or 3 is plenty, but you will have to see how you get on. This is only advice for when you are having a hypo. I am on insulin so it may be different if you are on diet or tablets.
Hope this helps anyway,
Chris