Like I posted earlier - before you rip the whole lot out, try to take about 3 inches of tiles from around the drain and you may be able to release the drain cover - if you can, then check to see if you have the extender fitted etc and then lower the drain and retile.
Thanks Tom, I have managed to get a row of tiles off without damaging the showerlay too much. I've unscrewed the chrome frame from the thread on the showerlay , there doesn't seem to be any adapter just the black flange that seems to be part of the tray.
The chrome frame has actually come apart from the threaded plastic part, does anyone think it would be ok to bed the chrome frame with adhesive? Obviously it won't be screwed in.
I'll post a picture, could tilefix comment on this please ?
How do you add picture on mobile ?