Dealing with the CAA on this can be a bit of a process, but having it that far in the past is definitely in your favor. Usually, if it was a one-off episode over a decade ago and you’ve been off meds and stable ever since, it shouldn't be an outright blocker. You'll likely need to provide a report from your GP and maybe undergo a psychiatric assessment just so they can tick the box that there’s no risk of recurrence. It's more about the paperwork and proving "stability" than the actual history itself, so just stay organized with your medical records and be upfront during the exam.