not ideal but it's leaving through the bottom so there shouldn't be too much potential for water to get in that way and the box probablly shields it somewhat from direct sunlight.
I might be wrong, but all of the cables, except the T&E, appear to be indoor flex, rather than SWA. The radii of the turns look too tight for SWA and there is no armour visible. It looks like the installer used an outdoor box and gland seals, for weather-proofing of the terminations only.
i bet the blck flexes are rubber which is what most pond kit has, no idea about the white one, but as rf lighting said no lid, but we all assumed he took the lid off for the pic
Are the Neutrals and Earths all crossed up? It looks like there's a Y/G wire in the bottom of the right hand terminal, and a Blue in the bottom of the fourth terminal.
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