Today I came upon some orange served M.I.C.C. cable running from the loft in a bungalow to a single metalclad socket. It may have been an immersion heater supply, but the copper cylinder has been removed. It appears to be quite big, perhaps 4.0mm2 or 6.0mm2.
I wondered just why it was installed in a domestic bungalow.
Apprentice training by an electrician father perhaps. Used as it was available. But the extra work terminating it would not warrant using spare cable from your works would it?
Bemused of Norfolk.?