Yep, still in use until the second I cut through it [and after!] I cannot remeber where it came from though. You would think I would remember something like that, but I come across so many jobs done by 'Factory Maintenance Engineers' motto...."if it is not broken then keep repairing it until it is". Double nutted though , so at least they tried.
Just checked the colours again....they are ALL either red or black. The reds are cotton covered rubber VIR. and the blacks are double covered rubber, probably what we used to call TRS [Tough rubber sheathed] The small cable on the left is PVC or Asathene approx 7/.064 which is about 6mm^2 ish. The others are about 16mm^2 or 25mm^2 equiv. could even be 35mm^2!!

More interesting pics to follow when I get time.