Keeping this in consideration, do you have to take a driving test at 80 UK?
There is no upper age limit to driving in the UK, as long as you are fit and able and you have renewed your licence you are legal to drive.
Subsequently, question is, is 50 too old to learn to drive? While it's true statistically that you're less likely to pass your driving test first time as an older driver, the figures also show that there's not much difference in the pass rate between the ages of 30 and 50. For men, those aged 17 and under are the most likely to pass first time (56.3%).
Thereof, should a 90 year old be driving?
Results: Results indicate that the oldest old adults (90-97 years old) were at no greater driving risk than were a younger old (80-87 years old) cohort and made similar types and frequency of driving errors. Conclusion: Drivers age 90 and above were at no greater driving risk than those one decade younger.
At what age should you give up driving?
The Insurance Institute for Highway Safety says that fatal crashes per mile traveled increase at about age 70 and peak at age 85 and older.