Dave Baker wrote:
I'm looking at fitting a new bathroom suite soon and the only bit I'm not
sure about is in fitting a new loo and what happens if that doesn't fit
against the wall and the waste position needs changing. I guess that
involves a major digging exercise down to the sewer and laying new pipes.
From the wall to the centre of the current ceramic waste is 25cm. Is that
some sort of standard dimension which means that any new loo will abut the
wall properly?

Not sure of your specific dimensions, but have a look at
http://www.bes.ltd.uk - they (and I would think most plumbers
merchants, TBH) stock any number of adaptors between clay and plastic
pipes, including some with flexible couplings and/or offset centres.
I'd be surprised if there wasn't something there to suit.

Does the existing soil pipe exit the loo horizontally through the back
wall, or downwards into the floor (the latter is more problematical I'd
have thought)

David