Here you go ... easy to figure out yourself
110 SW SE on Belgian website:
Defender Station Wagon | Land Rover Defender | Land Rover België
110 SW XS on UK website:
4x4 Station Wagon- Land Rover Defender Station Wagon | Land Rover UK
Not that much difference really. only found 2 differences, the the Belgian SE has carpet and UK SX has rubber mats, and Belgian SE has optional rear window wash/wipe and UK SX version has it standard.
For the rest, same wheels, colours, seats, radio, options etc etc.
Whereabouts are you in Belgium? I used to live near Doornik (Tournai). There is an excellent independent nearby:
garage vanhaesebroucke better service and greater knowledge of LR than the main dealer.