It is your responsibility to inform the DVLA if you’re unable to drive for more than 3 months because of an injury. Failure to do so could result in you being fined up to £1,000. Furthermore, you could be prosecuted if you cause an accident as a result of driving with an injury.
You should not drive if you are wearing a splint, cast, brace or boot that limits joint mobility. A cast on your arm will make it impossible to drive a manual vehicle, as you need to be able to control the vehicle while keeping one hand on the steering wheel. If you’ve a broken a leg or foot you will not be able to drive a manual or automatic vehicle until the injury is fully recovered and you are able to flex the affected joint with ease.
Your doctor should advise you whether or not operating a vehicle is safe, but they cannot make a legal determination of when it is safe for you to drive again…
Safe driving from Britannia!