What are you suggesting Wally? Sack the guy, make him unemployable and a perhaps re-offender, or give him a chance? Perhaps the AAT made the correct decision. I would say give him a go myself.
The guy has been convicted of drug smuggling and growing his own, and the job he chooses to return to is a courier needing access to restricted areas? Not only that but he has to appeal to ensure he gets that restricted access, surely he could just operate other routes/areas?
Sure he should be given a chance, at another career. There are plenty of jobs that can't happen because of a criminal record - and this should be one of them.