Whether mitigating circumstances exist or not, your records will remain on the Criminal History System and Police Records Computer, both of which show up on the Disclosure Scotland form. There is no way of hiding this fact unless the offence is subject to "weeding".
I suggest you check out
www.disclosurescotland.co.uk to see the ins and outs of records.
Be mindful of the fact that airside passes and company employment now require a check so maybe just saying nothing is a mistake. That said I do know of one person with a very distant charge now working so it isn't impossible. However if this is a recent charge airlines may not be so relaxed for reasons above.
Just look at the facts before spending the money. As you see on this site it's difficult enough getting that first job!