As I said, I oversimplified deliberately.The difference is that Trek had standing sets, whereas the BBC put up and took down all sets for each studio session. So from season two B7 would combine two episodes, shooting all the Liberator flight deck scenes at once so the set wasn't needed for the other session (I have the studio script for Horizon, no flight deck scenes, but all the teleport bay and corridor scenes for Shadow).
On Who, by the 70s, the TARDIS scenes were always left till last, because if time ran out they could be done in the next story. Whereas on Trek, the bridge scenes were often done first, while the guest sets were being built.
I've never seen an actual B7 script. I'm curious about the formatting.