It is very important you understand this one.
EU drivers must possess a EU driving licence and either a passport or ID card.
Drivers from outwith the EU must possess a valid domestic driving licence with English translation if necessary. If an English translation is not available, an international driving permit is required in addition to a domestic driving licence. A passport must also accompany a domestic driving licence.
The holder of an overseas driving licence may, for a period of up to one year, drive a motor vehicle in Britain.
If you are resident in the UK for more than one year, you must, by law, obtain a UK licence. This should not mean passing a test. Please see https://www.gov.uk/exchange-foreign-driving-licence You exchange your licence for a UK one, with a payment (usually GBP43) on completion of a form ,which you submit with your licence. This normally takes about 3 weeks.
WARNING During the pandemic, waiting times have increased a great deal, so make sure to apply very early! If you do not have a UK licence, but have been resident in the country 12 months or more, your own non-UK licence is not valid! If you drive with your old licence, your insurance will not be valid and you are driving illegally. If you are 67 or over when you become resident, you can drive for 3 years without changing your licence.
If in any doubt please ask and we can advise.