Matriculate in this instance means "to import the car at the same time as taking up residency. EU rules allow EU member states to transfer "goods and chattels" across country borders as part of mobility around the EU. However, you have to show utility bills for your former country of residence (in this case the UK). Unfortunately I am not in possession of any utilty bills that can demonstrate my residency in the UK so I am looking for someone in a similar position to myself that has matriculated acar without the need for such evidence.