Actually I was under the impression that most manufacturers only allow two wires per terminal under very specific circumstances (one 10 and one 6 mm2 in terminals rated for 16 mm2 mainly) but that info isn't easy to get so I might be wrong.
The second picture definitiely has some oddities, such as the sleeving on almost all conductors (compare the thickness of the loose blue wire on the bottom-right to the other conductors (that wire shouldn't have been left hanging there anyway). You can spot the sleeving in other places too, e.g. the green on the third MCB from the bottom on the left that suddenly changes to black and the neutral on the far right that suddenly changes from green to grey or possibly blue.
The spliced neutral with that choc block isn't supposed to be like that either. Then there are those two green wires spliced to blue ones fed straight from the main switch, which is very likely illegal too (unless there is a 10 or 16 A fuse upstream, in that case the whole board would be useless). The coiled up neutrals and earths don't look too good but aren't technically violations.
All MCBs seem to be L 10 amp.
The whole thing just looks batshit crazy to me!
