This really baffles me, actually. Just from being on these forums, it's pretty clear that people not affiliated with the BBC really are more than willing to share whatever information they've gleaned. If anyone on the TARDIS builders forum had worked out an accurate set of measurements, why on Earth would they keep them from other, like-minded people? It seems to me that if they're not going to share information, they may as well not exist. Furthermore, when there was a Crashed TARDIS on display outside the Millennium Center in Cardiff, apparently not roped off in any way, how come no TARDIS-building enthusiasts were down there measuring every little bit of it?I've been researching Tardis builds at the Tardis Builders forum. The process has been somewhat painful as the BBC, who owns the rights, approaches sharing of information in a polar opposite fashion to Lucasfilm, who embraces fandom in areas like R2 building and costuming. It doesn't help that the webmaster of the builders forum once removed my offer to laser cut pieces for Tardis consoles for builders for free, because of what it might lead to.
Anybody that's ever tried to build a Dalek knows exactly what I'm speaking about.
As such, there is essentially no excahange of real information, making the process quite difficult. Much more difficult that it really needs to be in my opinion.