Almost ten years ago a group of about 12 of us were making our way back to Calais from the south.We knew from previous trips that north of Rheims is quite heavily patrolled and agreed to keep to sensible speeds from that point.However one of my pals either forgot or his geography was not to hot, anyhow he got chased by a cops Impreza, fined over 600 quid, had his bike impounded,but had to make plans for its removal within 48 hrs(strangely one of the cops brothers was a white van man who took him and the bike to Calais for cash) and finally had his license confiscated,this was in Sept, and was returned via the British Consulate at Christmas.As I said earlier,they don't mess about,and that was a decade ago.