Supplier earth terminal on intake

[SJD]

The attached photo shows the suppliers head that includes an earth terminal.
The incoming supply cable is a single phase plastic sheathed cable containing L & N.
The earth terminal is not actually connected to anything (not internally linked).
The DNO is SSE.

A previous contractor was under the impression this was the suppliers earth and used it for earthing.
However, they did leave a comment that the earth impedance was "a little high"!

Historically the property was TT, but there is no longer any sign of an earth rod etc.
This is a fairly old property, now with a number of somewhat less-old properties nearby.
Likely the original supply was overhead, before the area got developed a few decades ago.

Question:
With this head fitted, with an accessible earth terminal, would it be correct to say the DNO has supplied an earth?
And in which case they should maintain it?
Or are there circumstances when this head would fitted but with the earth terminal not connected?

Ideally one would simply ask SSE what type of supply is available, but this seems to be proving difficult.
If it is reasonable to say this should be a supplier's earth, I'm tempted to log a call to say the earth appears to have failed.

 

[Samhhh]

From the two DNO's in the areas I work the shrink kit and braid earth is ENWL's solution which is quite neat and tidy while SP Energy Networks use something similar to a "jubilee" clamp around the PILC for the earth with a 6491x 16mm earth cable connected to it and a sheet rubber self adhesive wrap around it which looks quite bulky and a bit rough

I've never been a fan of jubilees on lead, always makes me nervous. The good thing about enwl kit Is that it's not tight pressure to the lead but it's more than enough to create a good and secure bond, especially with the mesh around the lead and the braid tied into it before the roll springs are applied. I've worked across multiple dnos over the years and find enw to have the best jointing techniques and terminations compared to other DNO's

 

[SJD]

Update to original post.

SSE attended earlier this week. I wasn't there and initially they said the connection was fine, it was a PME supply. The customer had to insist it wasn't, so they opened it up, muttered something about the earth being in the wrong terminal, and reconnected it per the updated photo.

Ze now measured 0.23 Ohm.
Perhaps needs a warning label that the "earth" terminal is not actually earthed?

 

[Strima]

Perhaps needs a warning label that the "earth" terminal is not actually earthed?

But that makes sense and would cost a couple of pence, not going to happen.

 

[UNG]

Perhaps needs a warning label that the "earth" terminal is not actually earthed?

How about a label to indicate it is now a PME supply
Does the earth cable connect to a separate earth block now

 

[SJD]

How about a label to indicate it is now a PME supply
Does the earth cable connect to a separate earth block now

Yes, a PME label would also be helpful.
The earth cable connects to an earth block nearby, with gas & water bonding & earthing for the consumer unit.