I'm trying to identify what everything around my fuse box does, whether or not some of it might be redundant/could be made more compact, and who would be allowed to do the work if so (electrician or power company). This is in the United Kingdom. The reason being that I want to put a new kitchen in this room and would like this to take up less wall space.
I can see I have the consumer units on the left, and the meter in the middle, I'm mostly wondering what the other two boxes do. One looks like it has an RCD in it, but also two large '400v' switches alongside it - what would be the purpose of these? The big green thing I think is the main house fuse, but I don't understand why both this and the RCD box have lines going into the floor, where would the RCD be wired to externally to this equipment?