It is best to surrender your licence into the DVLA or maybe the DVA If the medical doctor tells you to stop driving or If you don't meet the required requirements for driving thanks to your medical problem. If you do not surrender your licence, you need to nonetheless notify https://miloknsrs.bloggazza.com/36477536/the-greatest-guide-to-https-www-andersoncarlconsultancy-uk-driver-licence