First of all, you're not barred. Only certain offences result in being barred, and they're all safeguarding offences. However, that doesn't stop employers discriminating against people with convictions to disclose. To counter this, in Scotland you have the right to appeal to the Sheriff's Court to have the conviction removed from your PVG. You can find details here
. Your conviction should be spent by now, and it doesn't appear to be on the list of offences that must be disclosed, so that's encouraging.
Robert Lightfoot, former head of NASA, said it succinctly in his parting speech in April 2018: Protecting against risk and being safe are not the same thing ... [W]e must move from risk management to risk leadership. From a risk management perspective, the safest place to be is on the ground. From a risk leadership perspective, I believe thats the worst place [we] can be.