You should surrender your licence into the DVLA or the DVA When your doctor tells you to stop driving or If you don't meet up with the expected benchmarks for driving due to your healthcare problem. If you do not surrender your licence, you have to nevertheless tell the DVLA https://robertoo122ytn6.techionblog.com/37746646/https-www-andersoncarlconsultancy-uk-driver-licence-things-to-know-before-you-buy