asked on the UK site about getting there....
"From London drive about 50 miles to Dover in Kent . Take the ferry to dunkirk in France costs about $90 dollars u.s return for car and 4 people .takes about 90 minutes and around 3 hours with coffee breaks to Chimay . Trouble is you will be shocked by the price we pay for gas/petrol !!! Around £7.00 /$10.00 a gallon"