So I'm Moving a sink From between the soil pipe and the bath, to the other side of the toilet (shown in the picture). It is a steel pipe and the outlet for the sink is on the right hand side. So I need to cap it off but how will I tap into the other side can I go in through the toilet pipework, i'm thinking about cuttin the toilet pipework off at the soil pipe and put plastic pipe back on. Can I tee off at the toilet?