at conflicting advice coming out of the same hospital, Ingles!
Bitofcheese, I think you are right about a lot of nuts being processed in the same factory, that's why it's generally advised only to eat other nuts straight from the shell, that way you can guarantee no cross-contamination.
£800 seems a hell of a lot for a private consultation, I think we only paid about £300 in total to see Dr Fox. Agree that you should see the GP again and ask for follow up testing/advice. Did you know that you can ask to be referred to anywhere in the country now? We go to London even though we are nowhere near - it seems worth it to me for something so important, and not too much hassle as appts are few and far between.
My dh is also far more laid back than me, but I think when you are the one that's had to wean your child, and then helicopter them around various playgroups and activities where there are hordes of children all clutching various mystery items of food, and trailing them around the floor to be picked up and eaten you see things slightly differently! When DH said to me, 'but he's doing really well, we've never seen him have a reaction,' I had to explain in words of one syllable that this is because I am watching him like a hawk every waking moment, it's not just down to luck!! Thankfully he now takes more responsibility, so the burden is not all on me. You're not alone with your anxiety though, I can't even begin to think about eating out at the moment 
Has your dd been prescribed an epipen? If not, do you think that might help take away some of the fear?