Greek residency - do you keep your UK C1 driving licence?

[Oscar]

Just wondering how greek residency worked - is it the same as say, France and Spain - ie - do you have to exchange your UK driving licence for a greek one, and are you able to keep your C1? If you've got a UK registered motorhome/vehicle, can you still drive it on UK plates in Greece?

Any useful info from those in the know would be appreciated (pm if you prefer)

Thanks