Are you sure? I mean, why would they list just Aeroflot and Vietnam Airlines, and then not list all the other airlines operating on the same routes as BA? There must be some reason why BA would want to publicise an Aeroflot flight in its own timetable. Interestingly, the LGW-SVO flights are operated by Tupolev's. Imagine that, a BA affiliated flight on a Soviet A/C!
I used to think the brain is the most fascinating part of my body. But, hey, who is telling me that?