Does a drunk driving ban need to be included in a CRB - UK Law?

Yes - simply because if you're applying fo a job, and the company asks for a CRB check, your conviction will be discovered - If you don't declare it, and it's discovered by a CRB check - you could be fired on the spot - regardless of whether the conviction has any bearing on your duties. It depends what job you're applying for. Obviously, if the job will involve driving, you should declare the conviction. Best to come clean at the outset - they will appreciate your honesty.