Of course I try to help here, and searched for this Rehabilitation.
Rehabilitation of Offenders Act 1974 - Wikipedia, the free encyclopedia
Then you read this part. Examptions.
There it says, thats how I understand that you have to notify the company where you apply for a job, since, you are going to work in transport.
But on other hand, I filled in BA Cityflyer application. There they ask if you have a conviction which is not spent. But that confuses me a bit. In my case nothing wrong, so nothing to worry about, but according to written in Rehabilitation of Offenders Act 1974 it says you have to notify that company you apply for. I am just saying. So this spent, is totally clear. After a certain amount of years you dont have to tell the company about, but in transport you have to.