Correct. Mine was1984; my brother in law was 2010. I remembered that he had commented when he came round and noticed our plugs. All mine have back boxes (patress boxes?). My BIL had the plugs moved as part of a major rewire and it was never imposed upon him. I expect that the surveyor was simply trying to help. (My surveyor in 1984 pointed out that the chimney would need re-pointing in the near future. Anyone know a good roofer?)
They are sockets not plugs. Plugs plug into them.