As I mentioned in this thread, it's unusual to find HV and LV running on the same poles in the U.K., other than where they meet at a pole-top transformer.

Here is one such rare occurrence though, a few miles from me. This is a single-phase HV spur line (two legs of 11kV delta) crossing the road on the top of the poles, with 3-wire 240/480V below:

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There's a 240V feeder running down the pole from the xfmr and underground to somewhere, quite probably the old church you can see in the first photo:

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This is the first pole on the opposite side of the road from the transformer. Note the extra earth connection to the LV neutral:

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And this is as far as the shared spans run. Two 240V service drops off to the left go to a couple of houses behind the trees, and the 240/480 continues a short way off to the right to a farm and house:

[Linked Image]

(Sorry about the contrast on this last pic; I was shooting almost into the sun.)

So there you have it: HV and LV sharing a grand total of three spans!