Whilst waiting for a tube last night, I noticed a rat's nest of filthy cables coming out of the top of what looked just like a length of soil pipe, (but was probably 6" cast-iron conduit), which then ran off in all sorts of directions into the roof etc over the platform.
One was labelled "SFA CABLE".
Presumably it does nothing.

One was labelled "SFA CABLE".
Presumably it does nothing.
