Hi thanks for that. Sadly the existing clay 90 bend was entombed in concrete the whole way round as well as the pipe at least 1m back towards the drain, meaning it was not possible with the access i had (!) to be able to reveal enough clay pipe minus concrete casing to add a join to for option 1.
So its off to the hire shop to dig the path up for option 2. It seems the whole clay pipe is entombed in concrete but at least outside i can get the whole way round the pipe and concrete lump and carefully chip off concrete to allow a join to go in.
Else it is the whole lot up and new chamber etc - all to move a bleeding pipe 6" inside a cloakroom ouch.
Those reading who have a toilet boxed in away from the wall to mate up to a soil pipe that comes through the floor but a long way out from the skirting etc - take note. In your search for a flush toilet, you might just uncover a can of worms as i have done.
Unless you enjoy a hydraulic breaker and lots of effort and expense that is
