You need to tell DVLA about some medical conditions as they can affect your driving. You can be fined up to £1,000 if you do not tell DVLA about a medical condition that affects your driving. You may be prosecuted if you’re involved in an accident as a result.
Department for Transport
International and domestic freight transport (including by air, ship, road and rail, including roll-on/roll-off transports) is classified by UK government as an essential activity in the context of its travel advice. Check the latest travel advice and information.
Department for Transport, Foreign and Commonwealth Office
Driving with medical conditions and assessing fitness to drive.
You must wear glasses or contact lenses every time you drive if you need them to meet the ‘standards of vision for driving’. Fitness to Drive.
To drive a particular type of vehicle, you need an ‘entitlement’ for that category on your driving licence.
The codes printed on the back of a driving licence tell you what conditions your drivers must meet to drive.
For drivers of goods vehicles or combinations of vehicle and trailer of more than 3.5 tonnes and passenger vehicles with more than 9 seats (including the driver’s).
Road traffic signage in Great Britain, including information on the signing system, regulatory signs, speed limit signs and all other signs.
Commercially operated vehicles – Framework for mitigating security risks from malicious use - specification