urm m8 thats the rear window washer fluid pipe.
it goes from washer tank - over the wheel arch - into drivers RH bulkhead - down along inner sill with the loom - across the middle cross beam under the front seats - backwards along the LH sill/floor - up the C-pillar behind the rear arch - crosses over from chassis to boot lid via rubber boot - out the top washer jet nozzle.
the sunroof drains are thick black rubber tubes hidden in the a-pillar box sections, have to remove the foam filling. shown here with an extension added
