We actually had quite a productive morning. The structural engineer didn't turn up(!) but the builder, plumber and electrician did so we've been able to work out lots of detail, planning lighting, plumbing etc. This is all for the detailed quote.
We're getting two quotes one for radiators, one for under floor heating as that will work better with the heat pump we're planning.
DH now has a meeting booked with the structural engineer next week. And we'll be making design appts with Howdens and the bathroom company to sort out the details.
The whole thing is pencilled in to start in October!
It's possible we could be in by Xmas but I don't want to get too excited...