Ah OK, probably why I wasn't getting far with my searches...thanks for confirming that.
If its not then technically a stub stack, do I still need to run a short section of 110mm pipe to the height of the cistern to stop overflow (where I was going to run the w/m and basin waste into to) or...
First post here, usually find most information from searching but this is one where I need a little help.
I am in the process of moving the downstairs (ground floor) wc to the other side of the room. There is also a basin and washing machine going in.
The main stack is ventilated...