Be up front and declare it and I suspect it will not be an issue. A 12 month ban suggests that your reading was low. I applied to NATS as a trainee ATCO in 1996 having been banned for 12 months in 1993. I declared it and the only time it was mentioned was at my initial medical when the AME seemed singularly unconcerned. I've been continuously valid since 1997. My foolish teenage mistake has not impeded my career. All the best.
