New Judge,
Do you need to exchange the licence after three years? Looking at the link you provided the statement:-
"you can drive in Great Britain (GB) on your full, valid driving licence from an EC/EEA country, until you are 70, or for three years after becoming a resident, whichever is the longer period".
I am not sure how to read it. Does it not mean you can drive until you are 70 on an EC Driving Licence?