Snapper, its the easiest thing on earth and don't be put off by those doing the typical English thing and making a mountain out of a mole hill.
If I were you flying from Norfolk. I would fly to Lydd, easy in one hop in a C42. Refuel with tax free fuel, file a flight plan and then head for Le Touquet. You can do all of the customs stuff you need in Lydd in 5 minutes and the trip across the channel is a breeze.
It's a mecca for Brits especially those doing the channel for the first time. You get excellent service and a 10 minute cycle from the rented bikes gets you into town for a range of great restaurants. I love seafood and the choice is wide.
I have been to Le Touquet twice in the last week, once on diversion and once on 30 minutes notice for a nice lunch.