Along_the_Wire you can literally see that the flooded area in the photo Amps posted is the same as spot 1 in the link I posted (by Ruckinge Dyke/Newtown, with one straight section of motorway at the bottom, and with the motorway section at the top cutting from right to left with the loop). You can see it on google maps as well.
Meanwhile, here is confirmation that the lorry park will indeed be built rather on the spot highlighted as 2 on the picture I posted - Church Road, Sevington, next to the M20:
https://shepwayvox.org/2020/07/10/10000-lorry-brexit-customs-clearance-centre-to-be-built-on-the-outskirts-of-ashford/#prettyPhoto