While there is no legal age at which you must stop driving, it is advisable that you stop and think about whether or not it is actually safe for you to continue to do so. Sad as it is, our general health and fitness will begin to deteriorate as we get older, and age-related conditions begin to set in. It might be time to consider giving up driving if your reactions are notably slower than they used to be, or if your eyesight is getting worse. If you have a medical condition that could affect your ability to drive safely, you should ask your GP for advice on whether or not you should still be driving.
Since we all age differently, there is no specific age at which all drivers become unable to drive safely. However, you will need to renew your driving licence every three years after you turn 70.
Safe driving from Britannia!