While digging a trench in my front yard to install some wooden edging, I've located this piece of underground pipe.

I knew there was a sewer pipe in the nearby vicinity as marked on my LIM but I've already located part of that and it's about 1.5m away from the one pictured and runs parallel.

The pictured pipe is empty and appears dry inside. It seems a bit odd there's the gap of about 6mm between the two sections shown. My property is moderately sloped and there's a sump about 10m away from this pipe which drains into a nearby stream so I'm wondering if the pipe and the sump are related...could the pipe be part of a [storm water] drainage system?

The ceramic is in very good condition and was covered with polythene sheeting so doesn't appear to be particularly old.