I agree we should not suggest the bloke drives a horse as none of us know the full picture.
it looks ok for the purpose of being concealed but as others have said at present it doesn't appear to be in a safe zone. But then again we can't see the whole picture or know how it's going to be finished.
i think the best thing to do would be to ask the electrician if he can explain to you about the safe zones and ask him to show you how his work complies, as for putting the switches next to the pump, I can't see any problems.
As for the RCD, I would have thought it would just be on the one circuit but without looking I can't comment. I think he has possibly made the best of what he had to work with there, it's got to have an RCD and I suspect he probably advised you that it would be fitted in that way, you don't tend to have many options when working with old boards.