Did you sort this out at the same time?
Looks like the two legs of the ring from the original low level socket have been terminated into one JB then extended from to one socket (OK) then from there to the other (Not OK).
Yes, I was sure it wasn't correct, but then the longer we live here the more bodging jobs I come across. The previous owner was called Roger (the bodger).
All sorted now, though. I thought that the JB at the bottom joined two bits of a ring, and this proved to be correct. We got in an electrician (but I was seriously thinking of doing the job myself if one wasn't available in time - I was sure I could manage it!) He went 'mining' under the floor to re-join the ring: he told me that was better than doing it above the floor, presumably because it would be 'more accessible' than behind a new fitted unit - and connected a new length of T&E to the new JB, ran it up the wall to the left hand socket shown, added a protective metal cover, and removed the right hand socket and cable, which would have been inside a new wardrobe and not particularly useful. He also plastered over the chasing and filled the void left by the right hand socket which, incidentally, wasn't actually screwed to the wall behind - Roger again!
BTW, I had a call from the DNO today - the Project Organiser. He didn't actually give me any idea of when the job might be done but said he'd like to come and have a look at things.
I told him that I'd have to lift the new carpet I'd put down over the site of the old (present) cast iron junction box if he needed to inspect that area, and told him that both I and his colleague who visited on 30 March had taken photos of the area. Apparently, his colleague's photos weren't very good (!) and he hadn't seen the ones I had e-mailed to them so asked me to e-mail them to him directly. I hope they serve his purposes but, if not, I'll just have to lift the carpet. Not a big deal.
Anyway, I requested that rather than replacing the existing box, cables and cast iron conduit, I'd prefer a new connection to the side of the house just outside the existing meter and CU, if that is possible. He did say that there would have to be some digging, which I'd expect, but I hope the wife won't be too angry if the front garden acquires a new trench. I haven't told her yet!