Bill_The_Bear, Yes I filled in the survey but I didn't have my order number at the time so had to leave it blank. Should I go back in & re do it now I have it?
I'm quite keen to have people fill in the full order number where they are willing to do that because that way I can get the best information about when an order becomes a confirmed BW, and is therefore a reliable estimate of how long between order and build. This can then be applied to orders that don't yet have confirmed BWs so we can estimate them and make predictions about what factors might delay an order such as a particular option. If you fill the form in again and give the full order number it will of course not be shared anywhere.
However, I can tell you about the closest order to your without it. The closest match to yours was ordered a month before, so extrapolating I'd predict a BW of 30. However, I might be overestimating how long because early orders obviously couldn't begin prior to week 22 anyway, so a long estimate for them doesn't necessarily mean a long estimate for you.
EDIT:
Oh yes, and we're far from convinced that similar orders mean similar BWs... but right now that is the best I've got to go on.
