I fly EGLD - LFAT frequently. Agree with all that has been said, except now no need to advise Le Touquet of crew/pax. Flight plan is all that they need.
If you fly the direct route EGLD-LAM-LYD-LFAT be aware this takes you over Headcorn where there is a lot of parachuting so call them on 122.0 before going to Lydd on 120.7.
Lille on 120.27 will usually give you a squawk before transferring you to Le Touquet on 118.45 when you are about 10nm out.
Le Touquet ATC speak better English than I do and wil usually put you right downwind for R/W 32 or left base for 14. Very relaxed and helpful on the ground. Fill in your return flight plan on arrival to save a few minutes.