What exactly is the problem with the masterseal socket in the first picture, apart from the SWA cables being a bit drunk, thats the way most sparks would do it. How else would you make 2 20mm glands off into one 20mm knockout without affecting the IP Rating. The box is sealed and has a gasket by the looks of it , so is fine and as its a single socket must be protected by an RCD inside the premises so no shock risk there.

Nick