sure thing, outside and inside.
On an unrelated note, are there any regs concerning how far back the insulation is stripped on the incoming tails? I don't like the fact there is a few mm of live tail showing and would have thought the tail insulation should touch the main switch body? I was told by a mate years ago when wiring sockets etc to never leave bare cable showing outside the terminals. This is how it was when fitted with the exception of the disconnected neutrals in the top right and also a groove I cut in the wall to the left in order to get the cover back on without stressing the breakers. I took care to cover the electrics with some plastic sheeting and masking take to avoid any debris getting inside.