Oh my, I'm bad at this blogging lark. I've just got back on it because at last we have some stuff going on & taking a look at my last post realised that I never concluded that little chapter in the story of our build.
After much pestering by phone & email the council caved & gave us an answer. Yes, we can build to code 3 with the condition that we do everything we said we would in our letter of appeal. That's fine, we're happy!