PGA wrote:a bigger concern to me would be whether your insurance would be valid when you’re breaking the law by driving in that country.
There is NO offence you can commit in any country a policy ostensibly covers you for which summarily invalidates that cover.
The EU directive on motor insurance states that all policies MUST provide cover minimum 3rd party risk cover for their entire duration. Any clauses in a policy which seek to subvert that will be deemed illegal and unenforceable.
What that means in practice is that insurers can only cancel a policy (and therefore whatever cover it bestows) by writing to the policy holder informing them of their intention to cancel and giving the precise time and date at which it will be withdrawn. Whilst not actually specified they must give sufficient notice to allow their insured party to secure alternative cover.
Where there are 'irregularities' and an insurer pays out to 3rd parties then they may subsequently persue you personally for reimbursement off their losses.