AlanQS
Thanks for the Green Card Thread which I've followed up and found the following info, that sugested even though you have a green card you still may not be driving in euro with fully comp cover so beware.
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Many insurers will issue a Green Card, but have no obligation to do so. If they will not, you may wish to make enquiries with other insurers or ask about getting border insurance at the point of entry into the country.
The Green Card document itself is only proof that the minimum third party liability cover required by law in the visited country is in force. You should check with your insurer to make sure that your UK policy cover is fully in force when you travel abroad whether or not a Green Card is issued.
Within the countries where frontier inspection is no longer required, the Green Card is still the insurance document most readily recognised and understood by national police forces. As you may need to produce evidence of insurance other than at a border, for example after an accident, you may consider it advisable to carry a Green Card to avoid any inconvenience.
The Green Card system is administered in the UK by the Motor Insurers’ Bureau (MIB).
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Full details here....
http://www.direct.gov.uk/en/Motoring...ance/DG_067624