At the moment driving licences have to be renewed at 70, and then every 3 years after that. Unfortunately there is no 'fitness to drive' assessment carried out.
My own opinion is that everyone should be periodically reassessed.
Have to say, I agree with this wholeheartedly. That would also cure the issue of individuals aged over 80 with no intention of driving ever again, who take a hit in terms of penalty points incurred by family members who might wish to retain a clean or cleaner licence for employment purposes.
I should make it clear that I personally have no experience of this happening, and am merely recounting hearsay evidence reported to me by a person living well outside of my own immediate community....