The basin and bath have been moved to the other side of the bathroom, downstairs in the extension. The length of the waste now exceeds the max length it can run. I really don't want to have to involve a macerator.

Hi Lynchmark2

I'm not clear on your issue here? Is it that the waste line from the bath fixtures is now below the sewer main and will need to be pumped up to the sewer or am I missing the mark here?

Let me know more... lots more, OK?

Mark