There is a story that the "Radio Tower" at BT Labs was built as a waveguide - this is on the A1214. Given that the office accomodation in it is so weirdly laid

There is a story that the "Radio Tower" at BT Labs was built as a waveguide - this is on the A1214. Given that the office accomodation in it is so weirdly laid out I can believe that this might be so.