Reading
shriker_tam's comments on
Torchwood, I was reminded of a thought I had during the second series.
As people who watched it may remember, the Torchwood Institute logo is a T made out of hexagons, which looks like it's at an angle to the viewer. In the WWI ep, and the 1900s scenes in the last two episodes, they decided that was a bit too modern-looking, and the "old" Torchwood logo was a serif T in a regular hexagon.
It is my theory that the current logo was the brainchild of Yvonne Hartman, who strikes me as exactly the sort of person who'd decide a secret organisation needs a rebranding excercise.