I've just had an electrical check done on my flat, and it's failed. The consumer unit is ancient, with actual fuses, and no RCDs, and the mains sockets don't have earths. Apparently the pipework that holds the cables would have been the earth when originally installed, but owners before me have replaced single sockets with doubles and not properly connected to the piping. So no earths.
The electrician says that it's impractical to chase along/into the walls to do the rewiring, as they are concrete, and this would be about three times more expensive than doing a "surface" job with conduit (which can be made to look "industrial"). The estimate for even the conduit is looking at a few thousand £. (I'm in the UK)
Obviously opinions from strangers on the internet who can't see the property are going to be varied, but I have no practical skills myself.
Does what the electrician is saying at least seem consistent? (It is a small one-bedroom flat in a block that was purpose built in the 1950s or so.)