Mmmm, they are some interesting opinions.
I'd ask my GP for a referral to a respiratory physician, and get it properly investigated and treated (if necessary).
To those of you that think that asthma is a mild, self-limiting disease, this isn't really the case - asthma kills - I've seen TOO many near-deaths to ever again ignore asthma, and always advise patient to religiously follow their asthma mangement plans.
As far as I know, you can't lose your Class 1 for having asthma, so long as it is correctly managed.
Good luck!
Send me a private message if you want to know some more.