No one in Europe is interested in the blue or green disc, not once you get past the queue for duty free anyway, the enforcers will only ask for 3 things, CMR, Authorisation and Tachograph record, depending on how you treat them and explain it is for recreation or private pleasure then you should be on your way.
However, there is a “but”. If you only had a restricted o licence there is a note allowing you to drive on a national or international journey as long as the carried goods are not for hire or reward, this seems to be missing on a Standard National licence.
Depending on the trip, a green card is no longer necessary and provided you have told your insurance company then you are covered. If the company want to charge extra for a green card, tell them to swivel.
The countries that don’t need a Green Card are:
Andorra, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovak Republic, Slovenia, Spain, Sweden, Switzerland