Thanks for the pictures Paul!. [Linked Image]
I'm with Alan on the question as to the the make up of that sealing medium in the top picture, could it be Self-Amalgamating tape?.
What sort of a Earth Stake is that?, I've never seen a connection like that before.
Is grey TPS cable UV-protected when exposed to the elements like that?.
How come only one of these supplies has an RCD unit on it, when all the others seem to have only a MCB (?) protecting them?.
Are them feed cables (the black ones) armoured, rubber sheathed type?.
Interesting insulation tape/Bubble wrap mounting technique in the 3rd pic.
Also, I don't like the chances of loosening the screws on that connection box, without lots of CRC. [Linked Image]